Today in History for Jan. 7: In 1450, in Scotland, the University of Glasgow was founded. In 1610, Italian astronomer Galileo discovered the four satellites of Jupiter and named them Io, Europa, ...

Sky This Week is brought to you in part by Celestron. Friday, December 26The Moon passes 4° north of Saturn at 11 P.M. EST, ...

Last Friday, the interstellar comet designated 3I/ATLAS completed its closest approach to Earth without crashing into us or depositing an invading armada.

“Given the mass loss rate measured by the Webb Space Telescope, the gas around 3I/ATLAS would be swept up by the solar wind ...

Looking ahead, the comet will pass roughly 33 million miles from Jupiter in March 2026. Loeb noted the scientific value: monitoring 3I/ATLAS with the Juno spacecraft could reveal unusual activity, ...

Humanity has sent into space everything from lightsabers and Tesla Roadsters to golden records and entire digital genetic ...

Today is Friday, Dec. 19, the 353rd day of 2025 with 12 to go. The moon is new. Morning stars are Jupiter, Mercury, Neptune, ...

Night sky update for December 17, 2025, covering the moon phase, visible planets, meteor showers, and key space and astronomy news from today ...

United Launch Alliance launched an Atlas V rocket carrying 27 Amazon Leo satellites on December 16, advancing Project Leo’s low Earth orbit internet constellation alongside other commercial rockets.

The European Space Agency has released new images of a rare "butterfly" crater on the Red Planet. The bug-like structure ...

Astronomers from the Harvard-Smithsonian Center for Astrophysics (CfA) and elsewhere report the discovery of a new brown ...

The first planet ever found orbiting another star was detected in 1995, and it belonged to a class now known as a “hot Jupiter.” These exoplanets are comparable in mass to Jupiter but circle their ...