Star trails streak above the Mayall 4-meter Telescope, in a long-exposure photo taken at Kitt Peak National Observatory southwest of Tucson. New research using the 52-year-old telescope has led to ...

The Rubin team in central Chile is operating with cooperation from a vast global network with major centers in Lyon, France; ...

New evidence suggests the universe might not behave as expected, raising questions about the costs of being wrong.

A celebration of the long-awaited first images from a major new observatory is overshadowed by proposed severe budget cuts at ...

A fire burning southwest of Kitt Peak has closed the Kitt Peak National Observatory. The San Juan Fire is believed to have started Tuesday in a remote, mountainous area of the Tohono O’odham ...

Everything in space – from the Earth and Sun to black holes – accounts for just 15% of all matter in the universe . The rest ...

He chased eclipses for five decades, wrote several books about them and worked with NASA to make data accessible to ...

Milky Way arcs over Kitt Peak National Observatory | Space photo of the day for June 16, 2025 . By Kenna Hughes-Castleberry published 16 June 25 The view of our home galaxy lit up the night sky at ...

Rubin Observatory begins 10-year sky survey to uncover dark matter, track asteroids, and build a detailed view of our ...

Vera Cooper grew up gazing at the night sky from the window of a D.C. townhouse in the 1930s, when her teachers told the ...