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Aviation Week • Robert Wall

ArianeGroup's GRETA peroxide–ethanol engine completes hot‑fire campaign and wins ESA backing

ArianeGroup’s GRETA, a 5 kN peroxide‑and‑ethanol rocket engine aimed at lunar landers and Ariane 6 auxiliary/upper stages, completed a comprehensive hot‑fire campaign in Trauen demonstrating stable operation, controlled shutdowns and multiple restarts and has secured a new ESA contract to advance development.

2026-02-26T01:56:00.902775-08:00

New York Times

Climate-driven upper-atmosphere changes and FCC review gap heighten risks from SpaceX’s proposed 1‑million satellites

2026-02-26T08:53:32.326907-08:00

Via Satellite

Airmo and EnduroSat to Launch Methane-Monitoring Payloads for Global Emissions Surveillance

2026-02-25T11:05:57.555288-08:00

FlightGlobal

Jet2 completes Split Scimitar retrofit on 74 Boeing 737-800s to cut fuel burn and CO2

2026-02-24T08:15:55.525598-08:00

News Timeline

New York Times

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Climate-driven upper-atmosphere changes and FCC review gap heighten risks from SpaceX’s proposed 1‑million satellites Researchers warn climate-driven warming of the upper atmosphere is reducing drag and could extend orbital lifetimes for satellites and debris, complicating collision risk as operators propose up to 1 million spacecraft; regulators face a gap after the FCC said it is not required to assess environmental impacts.

2026-02-26T08:53:32.326907-08:00

Climate-driven upper-atmosphere changes and FCC review gap heighten risks from SpaceX’s proposed 1‑million satellites

Aviation Week

❗️

ArianeGroup's GRETA peroxide–ethanol engine completes hot‑fire campaign and wins ESA backing ArianeGroup’s GRETA, a 5 kN peroxide‑and‑ethanol rocket engine aimed at lunar landers and Ariane 6 auxiliary/upper stages, completed a comprehensive hot‑fire campaign in Trauen demonstrating stable operation, controlled shutdowns and multiple restarts and has secured a new ESA contract to advance development.

2026-02-26T01:56:00.902775-08:00

ArianeGroup's GRETA peroxide–ethanol engine completes hot‑fire campaign and wins ESA backing

Via Satellite

Airmo and EnduroSat to Launch Methane-Monitoring Payloads for Global Emissions Surveillance Airmo will partner with Bulgarian satellite manufacturer EnduroSat to place its methane emissions monitoring payloads into orbit, enabling global, space-based surveillance of methane sources. The collaboration will fly Airmo sensors on EnduroSat smallsats to provide operational measurements for emissions monitoring.

2026-02-25T11:05:57.555288-08:00

Airmo and EnduroSat to Launch Methane-Monitoring Payloads for Global Emissions Surveillance

Payload

Methane Monitoring Science Act would direct NASA to improve detection of agricultural and industrial methane Two lawmakers introduced the Methane Monitoring Science Act to direct NASA to improve the nation’s ability to detect methane emissions from agriculture—including livestock—and industrial sources. The bill seeks expanded satellite and measurement capabilities to locate and quantify leaks for mitigation and enforcement.

2026-02-24T10:34:46.500944-08:00

Methane Monitoring Science Act would direct NASA to improve detection of agricultural and industrial methane

FlightGlobal

Jet2 completes Split Scimitar retrofit on 74 Boeing 737-800s to cut fuel burn and CO2 Jet2 has completed a two‑year retrofit installing Aviation Partners Boeing Split Scimitar winglets on 74 Boeing 737‑800s. The airline says the programme will reduce annual fuel burn and CO2 emissions across its narrowbody fleet, improving fuel efficiency and lowering operating costs.

2026-02-24T08:15:55.525598-08:00

Jet2 completes Split Scimitar retrofit on 74 Boeing 737-800s to cut fuel burn and CO2

ch-aviation

Air France–KLM hit with €7.5m penalty after missing 2025 jet‑fuel GHG targets tied to €1bn green bond Air France–KLM expects a €7.5 million (USD8.8 million) cost after failing to meet 2025 jet‑fuel greenhouse‑gas targets tied to a €1 billion (USD1.1 billion) green bond. The missed target will be recorded as a penalty against the group's results and underscores tangible costs of corporate decarbonisation commitments.

2026-02-24T07:11:32.943743-08:00

Air France–KLM hit with €7.5m penalty after missing 2025 jet‑fuel GHG targets tied to €1bn green bond

Leeham News

Leeham: Is Boom’s Supersonic Bet Doomed as Military ‘Green’ Policies Falter A Leeham News column questions whether Boom Supersonic’s commercial bet remains viable as faltering military ‘green’ policies remove a potential demand pillar. The piece also criticizes urban air mobility hype, calling eVTOLs “perfectly mediocre” and overpriced in its assessment.

2026-02-23T00:21:12.817860-08:00

Leeham: Is Boom’s Supersonic Bet Doomed as Military ‘Green’ Policies Falter

eVTOL News

Purdue GoAERO unveils HEART hybrid‑electric regional aircraft concept Purdue University's GoAERO research group unveiled the HEART hybrid‑electric regional aircraft concept, a design study that examines hybrid‑electric propulsion architectures, integration and feasibility for short‑haul regional operations. The concept frames academic research and industry collaboration on decarbonising regional air transport.

2026-02-21T16:05:17.386922-08:00

Purdue GoAERO unveils HEART hybrid‑electric regional aircraft concept

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Sustainability & Climate Initiatives News

ArianeGroup's GRETA peroxide–ethanol engine completes hot‑fire campaign and wins ESA backing

Climate-driven upper-atmosphere changes and FCC review gap heighten risks from SpaceX’s proposed 1‑million satellites

Airmo and EnduroSat to Launch Methane-Monitoring Payloads for Global Emissions Surveillance

Jet2 completes Split Scimitar retrofit on 74 Boeing 737-800s to cut fuel burn and CO2

News Timeline