Los Angeles CA (SPX) Aug 08, 2025
A team of astronomers has used NASA's Hubble Space Telescope to obtain the clearest image yet of interstellar comet 3I/ATLAS, enabling the most precise size estimates so far. The icy nucleus may measure up to 3.5 miles (5.6 kilometers) in diameter, but could be as small as 1,000 feet (320 meters). Even Hubble cannot directly see the nucleus, but its observations provide tighter constraints than

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Europe’s first MetOp Second Generation, MetOp-SG-A1, weather satellite – which hosts the Copernicus Sentinel-5 mission –  has launched aboard an Ariane 6 rocket from Europe’s Spaceport in French Guiana. The rocket lifted off on 13 August at 02:37 CEST (12 August 21:37 Kourou time).

MetOp-SG-A1 is the first in a series of three successive pairs of satellites. The mission as a whole not only ensures the continued delivery of global observations from polar orbit for weather forecasting and climate analysis for more than 20 years, but also offers enhanced accuracy and resolution compared to the original MetOp mission –

The launch of USSF-106 marks the Defense Department’s formal shift to flying national security payloads exclusively on domestic rockets powered by U.S.

SALT LAKE CITY – Mission Control Space Services is inviting organizations to test machine-learning models on the Canadian startup’s Persistence mission launched in June.

The facility is the first location in the Deep-Space Advanced Radar Capability (DARC) network

An alternative trajectory developed for a NASA Mars smallsat mission could enable other missions to go to Mars outside the constraints of conventional launch windows.

Geost’s technology is used in U.S. national security missions, including missile warning and tracking, space surveillance, and tactical reconnaissance