A near-miss earlier this year between NASA's TIMED spacecraft and the Russian Cosmos 2221 satellite was even closer than originally thought: The two objects whizzed by each other less than 10 ...

By comparing state-of-the-art X-ray measurements from the XRISM satellite with numerical simulations, they showed this is evidence for collisions between galaxy clusters, causing gas inside to ...

The Earth formed over 4.6 billion years ago out of a mixture of dust and gas around the young sun. It grew larger thanks to countless collisions between dust particles, asteroids, and other growing ...

Greenhouse gas emissions could reduce drag in the upper atmosphere, leaving more space debris in orbit and making satellites more vulnerable to damage, according to new research Margherita Bassi ...

While Earth’s one and only moon enthralls everyone on this planet, it can’t hold a candle to Saturn’s 274 moons, 128 of which were recently discovered and recognized by the International Astronomical ...

Pairs of planetary-mass objects, floating freely in space, intrigue scientists with their nature and origin. With masses comparable to that of Jupiter, these entities are often observed in young star ...

When Jupiter was young, about 4.5 billion years ago, a protoplanet with 10 times the mass of Earth crashed head-on into its surface. The impact shook Jupiter to its core - literally. That's the ...