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L1

All articles tagged with #l1

NOAA's SOLAR-1 Goes Live, Boosting U.S. Space Weather Readiness
space1 month ago

NOAA's SOLAR-1 Goes Live, Boosting U.S. Space Weather Readiness

NOAA’s SOLAR-1, the United States’ first satellite designed for continuous, operational space weather observations, has entered service after its year-long journey to the Sun-Earth L1 point. It will provide 24/7 real-time data on solar wind and CMEs, delivering CME imagery within about 30 minutes and in-situ data within five minutes to support warnings and decision-making for critical infrastructure, satellites, aviation, national security, and human spaceflight. Data will be publicly available via NOAA’s SWPC portal, strengthening preparedness for space-weather events and missions like Artemis II.

via National Oceanic and Atmospheric Administration (.gov)|
#coronal-mass-ejections#l1#noaa
Hidden L1 route trims propellant and keeps Earth in sight on the Moon trek
space1 month ago

Hidden L1 route trims propellant and keeps Earth in sight on the Moon trek

Researchers, using a 30-million-trajectory search, identify a fuel-efficient Earth–Moon transfer that funnels through the L1 Lagrange point to maintain continuous line-of-sight with Earth and reduce delta-v by about 58.8 m/s compared with the best prior route. The plan is a two-segment path: Earth parking orbit to a stable manifold leading to L1, then from L1 to lunar orbit via an unstable manifold, with entry to the lunar variate from the Moon-facing side. This approach directly addresses Artemis II’s radio blackout by avoiding lunar occultation, but its accuracy omits Sun and other perturbations and is date-dependent, suggesting potential broader applicability if generalized to other destinations in future work.

via Space Daily|
#artemis-ii#delta-v#l1