Launched on May 30, 1971, Mariner 9 achieved orbit around Mars on November 13, 1971, becoming the first spacecraft to orbit another planet. Following the failure of its counterpart, Mariner 8, Mariner ...

The world's best-selling astronomy magazine offers you the most exciting, visually stunning, and timely coverage of the heavens above. Each issue includes expert science reporting, vivid color ...

Astronomers have detected the first tidal disruption event (TDE), designated AT2024tvd, occurring 2,600 light-years outside its host galaxy's core, exhibiting intense, rapidly evolving radio signals.

On November 9, at 3 A.M. EST, the Moon will pass 4° due north of Jupiter, with both celestial bodies observable in Gemini during early morning hours. Jupiter, shining at magnitude –2.4, will be easily ...

Interim NASA Administrator Sean Duffy announced the reopening of the Human Landing System (HLS) contract for the Artemis 3 lunar landing mission. This decision arises from concerns regarding SpaceX's ...

Today is a busy day! Mercury passes 2° south of Mars at 2 A.M. EDT — we’ll observe the pair in the evening sky, along with a Titan transit of Saturn. But first, the Orionid meteor shower peaks as the ...

Astronomy is a monthly science and hobby magazine with more than 100,000 readers, and our website Astronomy.com is visited by millions of readers per month. The magazine serves an audience who wants ...

The Sun seems unchanging, but solar flares, prominences, and sunspots often pop up and disappear. Safely observing the Sun can be both fun and rewarding.

Star formation begins with protostars in cold molecular clouds, where gravitational contraction precedes nuclear fusion, and their early evolutionary stages are best characterized through ...

On October 25, Saturn's moon Iapetus reaches inferior conjunction, positioned 1.3′ north of Saturn and shining at approximately 11th magnitude, making it easier to observe near its parent planet.

The Pleiades (M45), a 100-million-year-old open cluster containing approximately 500 stars located 380 light-years from Earth, is observable high in the east by 10 P.M. local daylight time.

A leadership contest for the permanent NASA administrator position is underway, involving current interim administrator Sean Duffy and Jared Isaacman, whose prior nomination was unexpectedly withdrawn ...