The asteroid 2005 UK1 will make a close – but safe – pass by Earth on…
Category: Earth Sky
Betelgeuse’s companion star leaves detectable wake
This artist’s concept shows Betelgeuse’s companion star orbiting the red supergiant. The companion, which is orbiting…
Saturn-mass rogue planet revealed in unique new observations
View larger. | Artist’s concept of a rogue planet in the process of microlensing a more…
Cloud-9 is a new type of object: a failed galaxy
This image shows the location of Cloud-9, which is 14 million light-years from Earth. The diffuse…
Supermassive black holes in all galaxies? Maybe not
View larger. | In recent decades, we’ve come to understand most large galaxies as having central…
Unexpected atmosphere on lava planet is an exciting surprise
View larger. | Artist’s concept of scorching hot TOI-561 b and its sunlike star. New observations…
Bright blue cosmic outbursts linked to black holes
In 2024, astronomers discovered the brightest Luminous Fast Blue Optical Transient (LFBOT) ever observed. LFBOTs are…
Are Uranus and Neptune rock giants and not ice giants?
View larger. | Artist’s depiction of the interior of Uranus as either an ice giant (left)…
Dwarf planet Ceres discovered 225 years ago today
Dwarf planet Ceres’ Occator crater in false color showing surface composition via NASA/ JPL-Caltech/ UCLA/ MPS/…
Star’s double explosion is first of its kind
This artist’s animation shows a hypothesized event known as a superkilonova. First, the massive star ends…