What If is a Webby Award-winning science web series that takes you on a journey through hypothetical worlds and possibilities, some in distant corners of the universe, others right here on Earth.

When we gaze into the night sky, we see a tiny fraction of what lies beyond our Solar System. In the vastness of space, our Sun and its planets are but a speck of dust. There are thousands of ...

While there’s no need to fear that the black hole at the center of our galaxy will expand and consume everything, we can track rogue black holes as they move through the universe.

In the past decade, astronomers have witnessed three interstellar objects (ISOs) passing through the solar system. These ...

As we speak, 3I/ATLAS is hurtling toward the inner solar system at a speed of about 130,000 miles per hour — a "thousand times over the speed limit on a highway," Harvard's Avi Loeb quipped.

It Came From Outside Our Solar System, and It Looks Like a Comet 3I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the galaxy.

Our own galaxy, the Milky Way, hosts a 4 million solar mass black hole. Currently, it's not growing fast enough to blast out energy like a quasar, but we know it has done in the past, and it may ...

Just chillin' at the edge of the solar system For context, the Oort cloud is a spherical shell of comets and icy bodies that exist out beyond the orbit of Neptune, which is located around 2.8 ...

The two exoplanets, or planets outside of our solar system, orbit a star called TOI-1453, which is slightly cooler and smaller than our sun. Located about 250 light-years from Earth in the Draco ...