On the Webb telescope, 18 hexagonal mirrors combine to form a massive primary mirror that is 21 feet (6.5 meters) across. The ...

The Webb telescope is well-suited to identify asteroid 2024 YR4's size. Webb views a type of light we can't see with the ...

Astronomers say the asteroid, estimated at 40-90 m (131-295 ft.) in diameter, could impact Earth on Dec. 22, 2032. “It is ...

In a rare "time-critical" decision, the James Webb Space Telescope will study the true size of the "potentially hazardous" asteroid 2024 YR4 twice over the next few months. The asteroid has a ...

Captured by the James Webb Space Telescope (JWST), this celestial spectacle, known as Herbig Haro 30 or HH 30, highlights a ...

The exoplanet, discovered in 2009, remained elusive due to dense clouds. Now, scientists have peered through with the James ...

Humanity's most powerful space telescope is setting its sights on the most dangerous known asteroid in the solar system. However, 2024 YR4's current size is just an estimate based on ground ...

The chances of an asteroid hitting the Earth with enough force to destroy a small country have been increased to 1 in 43.

Captured by the James Webb Space Telescope (JWST), this celestial spectacle ... "These grains are only one millionth of a meter across — about the size of a single bacterium," the European ...

The director of the Space Telescope Science Institute, which runs the James Webb Space ... better sense of its size, Rivkin explained. And the Webb telescope — with mirrors over 21 feet across ...

A stunning corner of the cosmos was recently revealed by the James Webb Space Telescope, and astronomers ... is outfitted with a gold-coated mirror and powerful infrared instruments that allow ...