Black holes merging in the accretion disc of a supermassive black hole like the one at the core of the Milky Way might generate a visible signature, astronomers say.
Astronomers have found evidence for a complex mechanism that may explain how the Sun’s outer atmosphere, or corona, is driven to such extreme temperatures.
A star has been spotted racing out of the Milky Way at more than 6 million kph after a close encounter with the galaxy’s central supermassive black hole.
The NICER X-ray telescope array aboard the International Space Station has witnessed a brilliant Type 1 X-ray burst from a pulsar 11,000 light years away.
Astronomers have caught four galaxy clusters in the process of merging, a collision expected to eventually form one of the most massive objects in the universe.
One of 10 studies sponsored by NASA to explore possible planetary missions includes one for a Pluto orbiter that also would venture into the Kuiper Belt.