Astronomers do not know where thousands of “city-killer” asteroids are, Nasa’s head of planetary defence has admitted.

NASA’s Neil Gehrels Swift Observatory, a 21-year-old space telescope that has tracked gamma-ray bursts and cosmic explosions since 2004, is losing altitude fast enough that the agency has suspended ...

Officials have directed the space agency to pause funds for a host of science missions the White House originally pushed to cancel in its 2026 budget request, according to a letter sent to the ...

NASA has selected two Earth science missions for development, one focused on studying the atmosphere and the other on terrestrial ecosystems and ice.

NASA’s recent twin rocket missions from Alaska are aimed at unlocking the mysteries of auroras, specifically the rare and ...

EARTH cannot defend itself against the thousands of “city killer” asteroids that are zooming around space near our planet, Nasa chiefs warn. They reckon there are about 15,000 undetected ...

Two new satellite missions will help NASA scientists better understand Earth and improve the ability to foresee environmental ...

Two next-generation satellite missions announced Thursday will help NASA better understand Earth and improve capabilities to ...

A top astronomer responsible for defending the Earth against asteroids has revealed what keeps her up at night — thousands of “city killer” space rocks that remain undetected. Dr Kelly Fast, NASA’s ...

The Earth Dynamics Geodetic Explorer (EDGE) team was one of two teams selected out of four finalists for NASA’s Earth System ...