quasars
A new Technique Could use Quasars to Directly Measure the Expansion Rate of the Universe
The evolution of cosmic expansion could be measured by a new method using intensity correlation speckles.
Almost all High-Energy Neutrinos Come From Quasars
Earth is blasted by high-energy neutrinos from the most powerful objects in the universe.
A New Technique to Find Cold Gas Streams That Might Make up the Missing (Normal) Matter in the Universe
Where is all the missing matter? That question has plagued astronomers for decades, because the Universe looks emptier than it…
Astronomers are Starting to Understand the Quasar Lifecycle
Supermassive black holes have a complicated lifecycle. Sometimes they're "on", blasting out tremendous amounts of energy, and sometimes they're "off',…
Gravitational lenses could be the key to measuring the expansion rate of the Universe
Nailing down cosmic expansion could depend on distant quasars, and the time it takes their light to reach us when…
Quasars can twinkle?
It turns out you can teach an old dog new tricks. With a recent upgrade to a 50-year-old radio telescope,…
There’s a Black Hole With 34 Billion Times the Mass of the Sun, Eating Roughly a Star Every Day
In the 1960s, astronomers began theorizing that there might be black holes in the Universe that are so massive -…
How the World’s Biggest Radio Telescope Could be Used to Search for Aliens
In the coming years, China's FAST radio telescope could join in the hunt for extraterrestrials thanks to a partnership with…
Blazar Found Blazing When the Universe was Only a Billion Years Old
A team of European scientists have observed the most distant "blazar" to date, an active galaxy that was around when…
The Debate Over Cold Dark Matter Warms Up As Astronomers Take Its Temperature
Dark matter has long been one of the most mysterious things in the cosmos. It was first proposed in the…