An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

The objects were in the same region of the sky but were 13,000 light-years apart and not related to each other. The details ...

Scientists are developing miniature lightsails that could travel at unprecedented speeds, potentially enabling interstellar travel.

The idea of traveling through interstellar space using spacecraft propelled by ultrathin sails may sound like the stuff of sci-fi novels. But in fact, a program started in 2016 by Stephen Hawking ...

However, the challenge of interstellar exploration—journeys beyond our solar system to distant stars—presents far greater complexity and requires a radical reimagining of space technology.

A team of scientists has made the first experimental measurements of laser-induced motions of miniature lightsails in the lab.

In new images from JWST, we're finally seeing exquisite details of the flow and turbulence of the interstellar medium in the vicinity of a star we saw explode ... "We see layers like an onion," says ...

About 350 years later, that pulse of light has reached interstellar ... type of supernova explosion with a short pulse of energetic radiation. NASA's upcoming Nancy Grace Roman Space Telescope ...

Some 350 years after a supernova, its shockwave reaches interstellar space and causes clouds of gas and dust to glow. Credit: NASA / ESA / CSA / STScI / Jacob Jencson (Caltech/IPAC) Scientists ...

"This is going to completely change the way we think about the foundations of the cold interstellar medium," Josh Peek, an astronomer at the Space Telescope Science Institute in Maryland ...