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Browse the latest facts and intelligence extracted from space industry sources.

InformationArticlePublished

Latest Information

Browse the latest facts and intelligence extracted from space industry sources.

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InformationArticlePublished

The FCC approval authorizes Logos Space to deploy a constellation of 3,960 broadband satellites.

FCC Authorizes Logos Space to Deploy 3,960-Satellite Mega-Constellation for Enterprise ConnectivityFeb 5, 2026

The FCC-approved plan for Logos Space outlines a three-phase rollout strategy.

FCC Authorizes Logos Space to Deploy 3,960-Satellite Mega-Constellation for Enterprise ConnectivityFeb 5, 2026

Under Chairman Brendan Carr the FCC has moved toward a streamlined assembly-line approach for licensing mega-constellations to reduce backlogs and maintain U.S. leadership in space technology.

FCC Authorizes Logos Space to Deploy 3,960-Satellite Mega-Constellation for Enterprise ConnectivityFeb 5, 2026

The Logos constellation is purpose-built for enterprise and government users requiring high-performance connectivity resilient to electronic warfare.

FCC Authorizes Logos Space to Deploy 3,960-Satellite Mega-Constellation for Enterprise ConnectivityFeb 5, 2026

Thomas Tull’s U.S. Innovative Technology (USIT) fund is backing Logos Space’s market entry.

FCC Authorizes Logos Space to Deploy 3,960-Satellite Mega-Constellation for Enterprise ConnectivityFeb 5, 2026

Subsequent phases will scale the Logos constellation to 3,960 satellites operating at altitudes between 860 km and 925 km.

FCC Authorizes Logos Space to Deploy 3,960-Satellite Mega-Constellation for Enterprise ConnectivityFeb 5, 2026

The initial phase of Logos Space’s deployment involves the launch of 1,092 satellites to begin serving its first tier of enterprise customers globally.

FCC Authorizes Logos Space to Deploy 3,960-Satellite Mega-Constellation for Enterprise ConnectivityFeb 5, 2026

Analysis and evaluation of materials and products intended for non-space use are becoming more required for space applications.

東レリサーチセンター、宇宙開発の高度分析支援サービスを提供–放射線リスクへの信頼性評価に対応Feb 5, 2026

Toray Research Center (TRC) began an advanced analysis support service for space development on February 4 with cooperation from Hishiei Technica.

東レリサーチセンター、宇宙開発の高度分析支援サービスを提供–放射線リスクへの信頼性評価に対応Feb 5, 2026

The space environment presents risks including radiation-induced performance degradation, permanent failures, and soft errors that can cause malfunctions.

東レリサーチセンター、宇宙開発の高度分析支援サービスを提供–放射線リスクへの信頼性評価に対応Feb 5, 2026

TRC’s multi-scale analytical techniques enable analysis of degradation states of product components under space environment conditions.

東レリサーチセンター、宇宙開発の高度分析支援サービスを提供–放射線リスクへの信頼性評価に対応Feb 5, 2026

TRC performs post-test analyses of product components using atomic-resolution structural observation, interface and surface analysis, and material degradation evaluation across nano to bulk scales.

東レリサーチセンター、宇宙開発の高度分析支援サービスを提供–放射線リスクへの信頼性評価に対応Feb 5, 2026

TRC and Hishiei Technica provide a one-stop total service that covers experiment planning, testing, and analysis for space-related products including commercial off-the-shelf (COTS) items.

東レリサーチセンター、宇宙開発の高度分析支援サービスを提供–放射線リスクへの信頼性評価に対応Feb 5, 2026

TRC and Hishiei Technica launched the joint service to support reliability evaluation against radiation risks and harsh usage environments in space.

東レリサーチセンター、宇宙開発の高度分析支援サービスを提供–放射線リスクへの信頼性評価に対応Feb 5, 2026

Hishiei Technica has an integrated capability to plan radiation irradiation tests, conduct those tests, and prepare test reports.

東レリサーチセンター、宇宙開発の高度分析支援サービスを提供–放射線リスクへの信頼性評価に対応Feb 5, 2026

The article titled "Europe’s coming launcher struggle is not with Starship, but with itself" appeared on Space Intel Report.

Europe’s coming launcher struggle is not with Starship, but with itselfFeb 5, 2026

The article included a photograph of an unidentified man speaking into a handheld microphone.

Europe’s coming launcher struggle is not with Starship, but with itselfFeb 5, 2026

The article carried a BRUSSELS dateline.

Europe’s coming launcher struggle is not with Starship, but with itselfFeb 5, 2026

Sky Perfect JSat’s FY2025–FY2027 capital allocation plans include a total cash outflow of approximately JPY250 billion.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat allocated JPY60 billion to ‘Innovation in Strategic Businesses’ in its FY2025–FY2027 plan for a LEO satellite constellation and a fiber-optic alliance business.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat projects net cash from operating activities of JPY150 billion for the FY2025–FY2027 plan period.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat allocated shareholder returns of over JPY31.5 billion in its FY2025–FY2027 plan to dividends and repurchase of treasury stock.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat’s FY2025 capital plan totals approximately JPY80 billion in cash outflows.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat’s FY2025 plan allocates approximately JPY35 billion to enhancement of the revenue base, JPY20 billion to innovation in strategic businesses, JPY15 billion to new business fields, and JPY10 billion to shareholder returns.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat plans to use JPY70 billion of cash on hand as part of its FY2025–FY2027 funding mix.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat plans an increase in interest-bearing debt of JPY30 billion for the FY2025–FY2027 plan period.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat allocated JPY20 billion to ‘Challenge into New Business Fields’ in its FY2025–FY2027 plan for Space Compass, start-up investment, and CTV.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat expects a Japan Ministry of Defense ISR constellation contract to be set in the month referenced by the report.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat’s revenue and operating income increased for the nine months ending December 31.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat plans to fund part of its FY2025–FY2027 investments through external borrowing starting in FY2026.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat allocated JPY140 billion to ‘Enhancement of Revenue Base’ in its FY2025–FY2027 plan, covering JSAT-31/32, Superbird-9, ground stations, expansion of premises, and broadcast equipment.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

The M-35a second-stage motor uses about 15 tons of propellant, while the E-21 second-stage motor uses about 18 tons of propellant.

Latest news from JAXA etc. yesterday: they have officially decided to defer the bigger update of the 2nd stage motor ("E-21") for Epsilon-S & re-adapt the existing Epsilon stage 2 motor as the "M-35a" for an interim Epsilon-S Block 1 version:Feb 5, 2026

The M-35a motor reflects countermeasures for propellant and insulation raw material shortages and is not expected to affect motor performance.

Latest news from JAXA etc. yesterday: they have officially decided to defer the bigger update of the 2nd stage motor ("E-21") for Epsilon-S & re-adapt the existing Epsilon stage 2 motor as the "M-35a" for an interim Epsilon-S Block 1 version:Feb 5, 2026

JAXA will adapt the existing Epsilon second-stage motor as the M-35a for an interim Epsilon-S Block 1 vehicle.

Latest news from JAXA etc. yesterday: they have officially decided to defer the bigger update of the 2nd stage motor ("E-21") for Epsilon-S & re-adapt the existing Epsilon stage 2 motor as the "M-35a" for an interim Epsilon-S Block 1 version:Feb 5, 2026

JAXA has deferred the larger update of the Epsilon second-stage motor designated E-21.

Latest news from JAXA etc. yesterday: they have officially decided to defer the bigger update of the 2nd stage motor ("E-21") for Epsilon-S & re-adapt the existing Epsilon stage 2 motor as the "M-35a" for an interim Epsilon-S Block 1 version:Feb 5, 2026

The Epsilon-S Block 1 configuration with the M-35a has an overall length of approximately 26.8 meters.

Latest news from JAXA etc. yesterday: they have officially decided to defer the bigger update of the 2nd stage motor ("E-21") for Epsilon-S & re-adapt the existing Epsilon stage 2 motor as the "M-35a" for an interim Epsilon-S Block 1 version:Feb 5, 2026

JAXA will conduct a ground static-fire test of the M-35a motor to confirm that it does not contain the same causal factors as the E-21 combustion anomalies.

Latest news from JAXA etc. yesterday: they have officially decided to defer the bigger update of the 2nd stage motor ("E-21") for Epsilon-S & re-adapt the existing Epsilon stage 2 motor as the "M-35a" for an interim Epsilon-S Block 1 version:Feb 5, 2026

Epsilon-S Block 1 can support external satellite A launches to SSO with a maximum mass of 200 kg per satellite for two satellites.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

The re-adapted motor will have reduced lift compared with the original target performance.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

The demonstration Epsilon-S payload is being developed with expectations equivalent to a system refresh and is being concretized.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

Some Epsilon-S launches will be affected by the reduced lift of the re-adapted motor.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

Epsilon-S Block 1 can launch LOTUSat-1 to SSO with an approximate satellite mass of 590 kg.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

Epsilon-S Block 1 can support JAXA’s space technology demonstration acceleration program (JAXA-STEPS) with a target payload mass of roughly 100 kg (TBD).

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

There is a possibility that LOTUSat-1 will not be carried on the demonstration Epsilon-S mission.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

Epsilon-S Block 1 can support a JAXA high-altitude glider mission to SSO with a maximum satellite mass of 400 kg.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

The first Epsilon-S Block 1 launch is scheduled for the end of JFY 2026 (approximately early 2027).

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

JAXA will test a re-adapted motor around mid-2026 for the first Epsilon-S Block 1 launch.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

Epsilon-S Block 1 and later plans will be examined and advanced stepwise based on the results of the E-21 causal investigation.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

LOTUSat-1 will raise its orbit using its own onboard propulsion to compensate for reduced launch injection.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

Epsilon-S Block 1 can support external satellite B launches to SSO with an approximate satellite mass of 250 kg.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

The FCC approval authorizes Logos Space to deploy a constellation of 3,960 broadband satellites.

FCC Authorizes Logos Space to Deploy 3,960-Satellite Mega-Constellation for Enterprise ConnectivityFeb 5, 2026

The FCC-approved plan for Logos Space outlines a three-phase rollout strategy.

FCC Authorizes Logos Space to Deploy 3,960-Satellite Mega-Constellation for Enterprise Connectivity
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Feb 5, 2026

Under Chairman Brendan Carr the FCC has moved toward a streamlined assembly-line approach for licensing mega-constellations to reduce backlogs and maintain U.S. leadership in space technology.

FCC Authorizes Logos Space to Deploy 3,960-Satellite Mega-Constellation for Enterprise ConnectivityFeb 5, 2026

The Logos constellation is purpose-built for enterprise and government users requiring high-performance connectivity resilient to electronic warfare.

FCC Authorizes Logos Space to Deploy 3,960-Satellite Mega-Constellation for Enterprise ConnectivityFeb 5, 2026

Thomas Tull’s U.S. Innovative Technology (USIT) fund is backing Logos Space’s market entry.

FCC Authorizes Logos Space to Deploy 3,960-Satellite Mega-Constellation for Enterprise ConnectivityFeb 5, 2026

Subsequent phases will scale the Logos constellation to 3,960 satellites operating at altitudes between 860 km and 925 km.

FCC Authorizes Logos Space to Deploy 3,960-Satellite Mega-Constellation for Enterprise ConnectivityFeb 5, 2026

The initial phase of Logos Space’s deployment involves the launch of 1,092 satellites to begin serving its first tier of enterprise customers globally.

FCC Authorizes Logos Space to Deploy 3,960-Satellite Mega-Constellation for Enterprise ConnectivityFeb 5, 2026

Analysis and evaluation of materials and products intended for non-space use are becoming more required for space applications.

東レリサーチセンター、宇宙開発の高度分析支援サービスを提供–放射線リスクへの信頼性評価に対応Feb 5, 2026

Toray Research Center (TRC) began an advanced analysis support service for space development on February 4 with cooperation from Hishiei Technica.

東レリサーチセンター、宇宙開発の高度分析支援サービスを提供–放射線リスクへの信頼性評価に対応Feb 5, 2026

The space environment presents risks including radiation-induced performance degradation, permanent failures, and soft errors that can cause malfunctions.

東レリサーチセンター、宇宙開発の高度分析支援サービスを提供–放射線リスクへの信頼性評価に対応Feb 5, 2026

TRC’s multi-scale analytical techniques enable analysis of degradation states of product components under space environment conditions.

東レリサーチセンター、宇宙開発の高度分析支援サービスを提供–放射線リスクへの信頼性評価に対応Feb 5, 2026

TRC performs post-test analyses of product components using atomic-resolution structural observation, interface and surface analysis, and material degradation evaluation across nano to bulk scales.

東レリサーチセンター、宇宙開発の高度分析支援サービスを提供–放射線リスクへの信頼性評価に対応Feb 5, 2026

TRC and Hishiei Technica provide a one-stop total service that covers experiment planning, testing, and analysis for space-related products including commercial off-the-shelf (COTS) items.

東レリサーチセンター、宇宙開発の高度分析支援サービスを提供–放射線リスクへの信頼性評価に対応Feb 5, 2026

TRC and Hishiei Technica launched the joint service to support reliability evaluation against radiation risks and harsh usage environments in space.

東レリサーチセンター、宇宙開発の高度分析支援サービスを提供–放射線リスクへの信頼性評価に対応Feb 5, 2026

Hishiei Technica has an integrated capability to plan radiation irradiation tests, conduct those tests, and prepare test reports.

東レリサーチセンター、宇宙開発の高度分析支援サービスを提供–放射線リスクへの信頼性評価に対応Feb 5, 2026

The article titled "Europe’s coming launcher struggle is not with Starship, but with itself" appeared on Space Intel Report.

Europe’s coming launcher struggle is not with Starship, but with itselfFeb 5, 2026

The article included a photograph of an unidentified man speaking into a handheld microphone.

Europe’s coming launcher struggle is not with Starship, but with itselfFeb 5, 2026

The article carried a BRUSSELS dateline.

Europe’s coming launcher struggle is not with Starship, but with itselfFeb 5, 2026

Sky Perfect JSat’s FY2025–FY2027 capital allocation plans include a total cash outflow of approximately JPY250 billion.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat allocated JPY60 billion to ‘Innovation in Strategic Businesses’ in its FY2025–FY2027 plan for a LEO satellite constellation and a fiber-optic alliance business.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat projects net cash from operating activities of JPY150 billion for the FY2025–FY2027 plan period.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat allocated shareholder returns of over JPY31.5 billion in its FY2025–FY2027 plan to dividends and repurchase of treasury stock.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat’s FY2025 capital plan totals approximately JPY80 billion in cash outflows.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat’s FY2025 plan allocates approximately JPY35 billion to enhancement of the revenue base, JPY20 billion to innovation in strategic businesses, JPY15 billion to new business fields, and JPY10 billion to shareholder returns.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat plans to use JPY70 billion of cash on hand as part of its FY2025–FY2027 funding mix.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat plans an increase in interest-bearing debt of JPY30 billion for the FY2025–FY2027 plan period.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat allocated JPY20 billion to ‘Challenge into New Business Fields’ in its FY2025–FY2027 plan for Space Compass, start-up investment, and CTV.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat expects a Japan Ministry of Defense ISR constellation contract to be set in the month referenced by the report.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat’s revenue and operating income increased for the nine months ending December 31.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat plans to fund part of its FY2025–FY2027 investments through external borrowing starting in FY2026.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

Sky Perfect JSat allocated JPY140 billion to ‘Enhancement of Revenue Base’ in its FY2025–FY2027 plan, covering JSAT-31/32, Superbird-9, ground stations, expansion of premises, and broadcast equipment.

Sky Perfect JSat: Revenue & oper income up for 9M to Dec 31, Japan MoD ISR constellation contract set for this monthFeb 5, 2026

The M-35a second-stage motor uses about 15 tons of propellant, while the E-21 second-stage motor uses about 18 tons of propellant.

Latest news from JAXA etc. yesterday: they have officially decided to defer the bigger update of the 2nd stage motor ("E-21") for Epsilon-S & re-adapt the existing Epsilon stage 2 motor as the "M-35a" for an interim Epsilon-S Block 1 version:Feb 5, 2026

The M-35a motor reflects countermeasures for propellant and insulation raw material shortages and is not expected to affect motor performance.

Latest news from JAXA etc. yesterday: they have officially decided to defer the bigger update of the 2nd stage motor ("E-21") for Epsilon-S & re-adapt the existing Epsilon stage 2 motor as the "M-35a" for an interim Epsilon-S Block 1 version:Feb 5, 2026

JAXA will adapt the existing Epsilon second-stage motor as the M-35a for an interim Epsilon-S Block 1 vehicle.

Latest news from JAXA etc. yesterday: they have officially decided to defer the bigger update of the 2nd stage motor ("E-21") for Epsilon-S & re-adapt the existing Epsilon stage 2 motor as the "M-35a" for an interim Epsilon-S Block 1 version:Feb 5, 2026

JAXA has deferred the larger update of the Epsilon second-stage motor designated E-21.

Latest news from JAXA etc. yesterday: they have officially decided to defer the bigger update of the 2nd stage motor ("E-21") for Epsilon-S & re-adapt the existing Epsilon stage 2 motor as the "M-35a" for an interim Epsilon-S Block 1 version:Feb 5, 2026

The Epsilon-S Block 1 configuration with the M-35a has an overall length of approximately 26.8 meters.

Latest news from JAXA etc. yesterday: they have officially decided to defer the bigger update of the 2nd stage motor ("E-21") for Epsilon-S & re-adapt the existing Epsilon stage 2 motor as the "M-35a" for an interim Epsilon-S Block 1 version:Feb 5, 2026

JAXA will conduct a ground static-fire test of the M-35a motor to confirm that it does not contain the same causal factors as the E-21 combustion anomalies.

Latest news from JAXA etc. yesterday: they have officially decided to defer the bigger update of the 2nd stage motor ("E-21") for Epsilon-S & re-adapt the existing Epsilon stage 2 motor as the "M-35a" for an interim Epsilon-S Block 1 version:Feb 5, 2026

Epsilon-S Block 1 can support external satellite A launches to SSO with a maximum mass of 200 kg per satellite for two satellites.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

The re-adapted motor will have reduced lift compared with the original target performance.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

The demonstration Epsilon-S payload is being developed with expectations equivalent to a system refresh and is being concretized.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

Some Epsilon-S launches will be affected by the reduced lift of the re-adapted motor.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

Epsilon-S Block 1 can launch LOTUSat-1 to SSO with an approximate satellite mass of 590 kg.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

Epsilon-S Block 1 can support JAXA’s space technology demonstration acceleration program (JAXA-STEPS) with a target payload mass of roughly 100 kg (TBD).

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

There is a possibility that LOTUSat-1 will not be carried on the demonstration Epsilon-S mission.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

Epsilon-S Block 1 can support a JAXA high-altitude glider mission to SSO with a maximum satellite mass of 400 kg.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

The first Epsilon-S Block 1 launch is scheduled for the end of JFY 2026 (approximately early 2027).

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

JAXA will test a re-adapted motor around mid-2026 for the first Epsilon-S Block 1 launch.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

Epsilon-S Block 1 and later plans will be examined and advanced stepwise based on the results of the E-21 causal investigation.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

LOTUSat-1 will raise its orbit using its own onboard propulsion to compensate for reduced launch injection.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026

Epsilon-S Block 1 can support external satellite B launches to SSO with an approximate satellite mass of 250 kg.

JAXA will test this re-adapted motor (slight changes still present due to e.g. obsolete components) ~mid-2026 for a 1st Epsilon-S Block 1 launch ~end of JFY 2026 (early 2027-ish). Unfortunately this will have less lift and some launches will be affected.Feb 5, 2026