The interstellar comet 3I/ATLAS is now reaching its closest point to the sun, or perihelion, on Wednesday, according to NASA.

Over the past seven decades, thousands of sophisticated spacecraft have been launched on ambitious missions to look down on ...

Astronomers are stunned as interstellar comet 3I/ATLAS erupts early from behind the Sun, releasing a 10,000 km gas jet and ...

Comet 3I/ATLAS is warming up as it approaches the sun, causing a jet to emerge. The jet is visible in a dramatic new image.

New observations suggest that the dwarf planet Makemake is surrounded by faintly glowing methane gas. Scientists are unsure if the gas is contained within a wispy atmosphere or being ejected into ...

Physicist Michio Kaku says interstellar object 3I/ATLAS may reveal signs of intelligent life if it gains energy near the Sun.

The James Webb Telescope captures the beginning of planetary formation around the young star HOPS-315 for the first time.

Webb just spotted a carbon-rich moon factory 625 light-years away, revealing how moons like ours may have first taken shape.

I/ATLAS was first spotted by NASA scientists in May this year. Ever since, it has displayed behaviors that are not just ...

The Sun, an ever-burning ball of gas at the center of our solar system, has always fascinated people. But now, scientists are seeing it like never before. Thanks to the most powerful solar telescope ...

Anyone hungry for the icy crunch of a Pluto -like body? No? Well, one nearby white dwarf is going all in on a Pluto-esque ...

The interstellar object hurtling toward the inner solar system, where Earth is located, is much larger than previously ...