The Milky Way’s companion galaxy, Leo I, appears as a faint blob to the right of the bright star, Regulus. Credit: Scott Anttila Anttler. Decades…
Jupiter’s moon Io may have a hellish magma ocean below its surface
There are more than 200 moons in the solar system, but none like Io, the third largest moon in Jupiter’s eighty moons. Io is really…
Do black holes evaporate?
We all know that a hole is a kind of cosmic funnel: it swallows everything that comes close enough to be trapped in its gravitational…
Astrophysicists solve the mystery of a 40-year black hole jet with NASA’s IXPE
Blazars are some of the brightest objects in the cosmos. They are composed of a supermassive black hole feeding off material swirling around it in…
Why does the universe have a speed limit?
The universe seems to have a speed limit, a maximum speed that nothing can exceed. But why is this speed not infinite? And why is…
The Hubble telescope manages to capture a rare collision between galaxies
Image: ESA/Hubble & NASA, Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA, J. Dalcanton The James Webb Space Telescope has been getting all the attention lately, but Hubble, which has been…
The farthest known galaxy candidate discovered by the James Webb Space Telescope
Two regions of the galaxy cluster Abell 2744, whose gravity magnifies light from extremely distant background galaxies. The colors are composed of several infrared images…
NASA detected the largest and potentially dangerous “planet killer” asteroid in the last 8 years
The organization’s experts found a set of three asteroids. One turned out to be a possible threat to Earth. Due to their size they are…
Colossal exoplanet is one of the most massive super-Earths ever discovered
A newly discovered exoplanet just 200 light-years away could shed new light on one of the strangest mysteries in planetary science. About 1.8 times the…
We now know why black hole jets emit high-energy radiation
Active galactic nuclei, fueled by the supermassive black holes they contain, are the brightest objects in the universe. The light originates from jets of material…