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Space Policy

Toward Net-Zero Space Exploration: Technologies and Policies Driving Sustainable Space Missions

A new review published in Science of the Total Environment examines how the growing space industry could align with global net-zero climate goals. The study evaluates launch emissions, orbital debris, green propulsion systems, reusable rockets, and international policy gaps affecting sustainable space exploration. Researchers argue that coordinated technological innovation and stronger global governance will be necessary to reduce the environmental footprint of future space activities.

Space News

Inside NASA’s Roman Space Telescope: History, Science, and the Mission to Explore the Invisible Universe

NASA’s Nancy Grace Roman Space Telescope represents decades of planning, scientific ambition, and technological development aimed at understanding the universe at the largest scales. From its origins as a dark energy mission to its evolution into a major infrared survey observatory, Roman is designed to investigate dark energy, discover exoplanets, and map the cosmos with unprecedented efficiency.

Early Universe

Rare Galaxy Leak May Reveal How Early Universe Lit Up

Astronomers report LCEz4-M1, a candidate Lyman continuum emitter at redshift 4.444 in the Hubble Ultra Deep Field. Detected using VLT/MUSE, HST and JWST data, the galaxy may offer a rare direct view of how ionizing radiation escaped from early galaxies and helped shape cosmic reionization.

Space Weather

How Space Weather Accelerates Orbital Decay of LEO Satellites

Researchers from the German Aerospace Center (DLR) have developed a new method to better model how space weather increases atmospheric drag on low Earth orbit (LEO) satellites and debris. Using observed solar and geomagnetic activity from January to June 2024, the study found that severe geomagnetic storms dramatically accelerated orbital decay rates, especially for satellites below 600 km altitude. The work could improve long-term orbit prediction, collision avoidance, and space sustainability efforts.

Space Mission Design

New Study Proposes Lower-Cost Earth–Moon Transfers Through L1 Gateway Orbit

Researchers have developed a new Earth-to-Moon transfer strategy using the Earth–Moon L1 Lagrangian point and the Theory of Functional Connections (TFC). The method uses stable and unstable orbital manifolds around Lyapunov orbits to reduce fuel requirements for lunar missions. According to the study, the approach can save at least 58.80 m/s in delta-v compared to similar transfer methods previously reported in scientific literature.

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Galaxies

Three Quenched Dwarf Galaxies May Be M101 Backsplash Objects

Astronomers have identified three faint, quiescent dwarf galaxy candidates beyond the estimated virial radius of M101. Their structure, lack of recent star formation and provisional distances are consistent with a possible “backsplash” origin, in which galaxies previously passed through M101’s halo before moving back outward. Hubble or JWST observations will be required to determine their distances more precisely and test that interpretation.

Plasma Physics

Solar Orbiter Traces Magnetic Switchbacks to Interchange Reconnection

Solar Orbiter measurements have provided direct evidence linking a magnetic switchback in the solar wind to plasma originating in hot, closed coronal structures. Heavy-ion charge states, helium abundance and coronal modelling point to interchange reconnection as the process that released the plasma, while Alfvén-like behaviour suggests waves or turbulence helped the structure propagate through the solar wind.

Toward Net-Zero Space Exploration: Technologies and Policies Driving Sustainable Space Missions

Space News

Toward Net-Zero Space Exploration: Technologies and Policies Driving Sustainable Space Missions

Inside NASA’s Roman Space Telescope: History, Science, and the Mission to Explore the Invisible Universe

Rare Galaxy Leak May Reveal How Early Universe Lit Up

How Space Weather Accelerates Orbital Decay of LEO Satellites

New Study Proposes Lower-Cost Earth–Moon Transfers Through L1 Gateway Orbit

Latest

Three Quenched Dwarf Galaxies May Be M101 Backsplash Objects

Solar Orbiter Traces Magnetic Switchbacks to Interchange Reconnection

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Toward Net-Zero Space Exploration: Technologies and Policies Driving Sustainable Space Missions

Inside NASA’s Roman Space Telescope: History, Science, and the Mission to Explore the Invisible Universe

VLT/MUSE Confirms 55 Strong Gravitational Lens Systems

Rare Galaxy Leak May Reveal How Early Universe Lit Up

How Space Weather Accelerates Orbital Decay of LEO Satellites

New Study Proposes Lower-Cost Earth–Moon Transfers Through L1 Gateway Orbit

NASA Targets Early September 2026 for Roman Telescope Launch