CAPE CANAVERAL, Fla. — The moon and sun share top billing in 2026. Kicking off the year’s cosmic wonders is the moon, drawing ...

From new exoplanetary neighbors and a weakening dark energy to the best evidence for life on Mars and an interstellar comet ...

The third known interstellar comet to visit our solar system has just done something no one had seen before: it lit up in ...

The Vera C. Rubin Observatory is expected to detect up to 50 interstellar visitors in the coming years, giving a boost to astronomy ...

“The best estimates suggest Rubin should detect between 5 and 50 ISOs over its 10 year survey, stemming from the ...

All year long, these moments captivated the public, demonstrated dangerous trends, and pushed research and innovation forward ...

New study finds interstellar comet 3I/ATLAS exhibits typical comet behavior, with non-gravitational acceleration from outgassing, measured by NASA and ESA spacecraft, confirming it is not artificial.

The MarketWatch News Department was not involved in the creation of this content. Lowell Observatory astronomer Dr. Qicheng Zhang has captured the first ground-based optical images of Comet 3I/ATLAS ...

Lowell Observatory astronomer Dr. Qicheng Zhang has captured the first ground-based optical images of Comet 3I/ATLAS following its closest approach to the Sun, thanks to the unique low-horizon ...

The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space telescopes and orbiters have been documenting the rare visit. A mysterious ...

The Hubble Space Telescope and the Jupiter Icy Moons Explorer have captured fresh images of an interstellar comet as the object nears its closest approach to Earth later this month. Comet 3I/ATLAS has ...