Harvard astrophysicist Avi Loeb suggests interstellar object 3I/ATLAS could be far more massive than previously thought.

Gauging the mass of a black hole is tricky, but astronomers have devised multiple methods to measure the heft of these galactic gluttons ...

Astronomers observed something incredible in a region that not much was expecting—a planet-scale object drifting alone in space then burst into fiery life in a violent outburst of development. The ...

It's much harder to find, but there are a lot more of them." The first interstellar object to visit the solar system may have been a fragment of an icy exoplanet, research suggests. When 1I/'Oumuamua ...

I/Atlas has several anomalies for a regular comet. Yet, the scientific community is sure that it is a comet and not an alien spaceship. Harvard scientist Avi Loeb has now presented more data to show ...

Using the James Webb Space Telescope, astronomers discovered an extreme version of "little red dots" dubbed "The Cliff." Its light suggests that it could be a never-before-seen class of objects called ...

Kinetic energy has to do with the motion of an object—the faster it’s moving, the more kinetic energy it has. If you take a ball and drop it, it will accelerate downward, which means its kinetic ...

Since that day, LIGO — composed of two highly sensitive laser interferometers located in Hanford, Washington and Livingston, Louisiana — has been joined by two smaller gravitational wave observatories ...

In the 30 years since the discovery of 51 Pegasi b, more than 6,000 planets outside our Solar System have been catalogued. Two modern-day explorers explain how.