In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

Alas, the miracle could not last. The solar storms were heating Earth's upper atmosphere, causing it to inflate and increase ...

"An asteroid this size impacts Earth on average every few thousand years and could cause severe damage to a local region," ...

Was 2020’s ‘Don’t Look Up’ accurate? Find out what NASA revealed about an asteroid that will approach Earth in 2032.

NASA STEREO-A satellite's SECCHI/HI-2 camera captured this imagery of Comet C/2021 A1 (Leonard) Credit: Space.com | footage courtesy: NASA/NRL/B.Gallagher | edited by Steve Spaleta ...

The ESA/NASA Solar and Heliospheric Observatory (SOHO) has officially discovered 5000 comets. Comet number 5000 was spotted ...

Comet C/2024 G3 (ATLAS) seen above ESO's Paranal Observatory in Chile on Jan. 21, 2025. ESO's Very Large Telescope sits atop ...

Comet C/2024 G3 (ATLAS) observed passing near the Sun in January 2025 SOHO spacecraft captures stunning imagery of the comet’s tail Solar wind interactions offer new insights into the Sun’s influence ...

Comet C/2024 G3’s coma dims post-solar encounter Thermal stress suspected to cause nucleus fractures Observations hint at potential disintegration in progress ...

NASA and ESA's SOHO (Solar and Heliospheric Observatory) spacecraft snapped a video of the comet as it passed three times closer to our star than the orbit of Mercury, and ten times closer than ...

NASA astronaut Suni Williams will conduct a spacewalk next week to swab the outside of the International Space Station for microorganisms. Credit: NASA The experiment will focus on collecting ...