Brian Koberlein
It's Confirmed. M87's Black Hole is Actually Spinning
The supermassive black hole at the heart of M87 was the target of the Event Horizon Telescope, revealing the area…
The World's Largest Radio Telescope has Scanned Barnard's Star for Extraterrestrial Signals
Barnard's Star is the second closest star system to Earth, at a distance of 5.96 light-years. It's another red dwarf…
The Milky Way's Mass is Much Lower Than We Thought
How massive is the Milky Way? According to a new study using data from ESA's Gaia spacecraft, less than we…
It's Official, Antimatter Falls Down in Gravity, Not Up
Since the discovery of antimatter decades ago, particle physicists have wondered if these particles were repulsed by gravity. Einstein predicted…
Dark Matter Could Be Annihilating Inside White Dwarfs
Astronomers still don't know what dark matter is, but one of its characteristics is that it has a small "cross…
If You Could See Gravitational Waves, the Universe Would Look Like This
Our biology limits our vision. Our eyes can only perceive specific wavelengths of light. But what if we could see…
We Can't See the First Stars Yet, but We Can See Their Direct Descendants
The first stars in the Universe were enormous, made of primordial hydrogen and helium from the Big Bang. They lived…
Dark Photons Could Be the Key to Both Dark Matter and the Muon Anomaly.
Dark matter might have its own force, mediated by dark photons similar to the way electromagnetism is mediated by photons.…
First Contact Could Turn Out Well for Humanity
Most science fiction portrays the first contact between humanity and alien civilizations as a disaster. That's probably because our history…
Polar Ring Galaxies Are Bizarre and Rare. Astronomers Just Found Two More
Many galaxies resemble the Milky Way, with billions of stars organized into a rotating, rotating spiral. There are other irregular…