This type of galaxy represents a special and rare class in the nearby universe, and it is believed to host stellar explosions or winds strong enough to eject ionizing photons.
Astronomers assume that this possible “intermediate mass” black hole is a key to understanding the birth of supermassive black holes located in the centers of galaxies.
In this far-off galaxy, a ravenous black hole is devouring galactic grub. Its feeding frenzy produces so much energy, it stirs up gas across its entire galaxy.
Researchers have discovered the brightest supernova ever seen, and the unusual object powering it could challenge what physicists know about dying stars.
Although water vapor is the main gas seen flowing from Comet 67P/Churyumov–Gerasimenko, very few examples of exposed water ice have been found on the surface.
Kupalo Crater has bright material exposed on its rim, which could be salts, and its flat floor likely formed from impact melt and debris.
The New Horizons spacecraft shows some intriguing surface activity in the latest picture of Pluto.
Astronomers can’t find any sign of the black hole at the center of a quasar. It is still there, of course, but over the past 10 years, it appears to have swallowed all the gas in its vicinity and gone quiet.
A new study reveals the true origin of puzzling light from nearby galaxies — white dwarfs, not central black holes, explain these observations.