A surprising chemical difference between Pluto and Sedna, another dwarf planet in the distant Kuiper Belt, is helping scientists nail down their respective masses, a new study reports. The Kuiper ...

After tracking a puzzling X-ray signal from a dying star for decades, astronomers may have finally explained its source: The old star might have destroyed a nearby planet. Dating back to 1980, X ...

Astronomers have detected mysterious X-ray signals coming from a nearby white dwarf star for more than 40 years. We may now know where they’re coming from – the death throes of a planet being ...

Barnard’s Star has fascinated astronomers for decades. At just six light-years away, it is the second-closest single star to ...

To do it, he developed a model that simulated an Earth-like planet orbiting a white dwarf. He modeled the orbiting Earth-like planet as the habitable zone devolved, noting how much energy it ...

A planet killer capable of ripping them to pieces has been discovered, say space scientists. Researchers believe they've found evidence that a white dwarf may have torn a Jupiter-sized planet apart.

It's not often that planets align in the night sky. Attention, stargazers: Another celestial phenomenon is set to appear in the night sky Friday evening. Seven planets -- Mars, Jupiter, Uranus ...

Astronomy enthusiasts have a final opportunity to witness a rare seven-planet alignment on February 28, 2025, marking the culmination of a celestial event not to be seen again until 2040.

While the weather might be tough for seeing it tonight, there's a chance to see a 7-planet alignment in the skies tonight in Massachusetts. Supposedly, this will be the last such alignment of ...

Astronomers have traced decades-old X-ray emissions from the Helix Nebula to a white dwarf possibly consuming planetary debris. Reports suggest a Jupiter-like planet may have been torn apart by ...

"There really is something very different about how these giant planets form versus how small planets like Earth form." Scientists have used data from NASA's retired planet-hunting space telescope ...