The interstellar comet 3I/ATLAS is barreling toward its closest point to the sun as perihelion looms on Oct. 29. How ...

Scientists have unearthed an "interstellar tunnel" linking our Solar System to far-off stars, suggesting it could be part of a vast network of cosmic tunnels akin to a gigantic subway system. The ...

The twin stars in TOI-2267 orbit each other closely, forming what scientists call a “compact binary”. One of its planets ...

It’s not easy to uncover exoplanets, largely lightless objects that either lurk in the dark void of space or are blown out by the light of a nearby star. But astronomers using the James Webb Space ...

Scientists may have found the first planet ever detected around our closest “solar twin,” a star called Alpha Centauri A, the same real-life star that was home to the fictional moon Pandora in James ...

Jupiter was shaping Earth's fate before our planet even existed, carving gaps in the early solar system that kept its ...

3I/ATLAS likely weighs more than 33 billion tons. The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously thought, astronomers say. A ...