A single discovery in the outer solar system forced astronomers to confront a problem they couldn’t ignore, ultimately ...

Venturing past Jupiter is a generational challenge. This video explores the extreme frontiers of human spaceflight, where ...

Even the best telescopes can’t see exoplanets. It’s all about watching for jiggly stars, blue shifts, and transits.

Scientists studying the interstellar object ‘Oumuamua have proposed that it may be a fragment from a Pluto-like planet beyond our solar system. Researchers from Arizona State University's School of ...

The colliding objects are at least 37 miles across — at least four times larger than the object that collided with Earth 66 ...

Uranus and Neptune may not be the icy worlds we’ve long imagined. A new Swiss-led study uses innovative hybrid modeling to ...

A team of researchers from the University of Zurich and the NCCR PlanetS is challenging our understanding of the solar system ...

In 2004, a bright point of light in the debris disk surrounding Fomalhaut was thought to be an exoplanet. But the spot ...

In a discovery that's fit for a movie, Northwestern University astronomers have directly imaged a Tatooine-like exoplanet, orbiting two suns. While obtaining an image of a planet beyond our solar ...

Scientists atop Mauna Kea on the Island of Hawai’i and across the Hawaiian chain are turning their telescopes skyward Friday ...

While the 21st century has been bumpy, it has also ushered in monumental scientific and technological breakthroughs that have ...

I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object ...