Planetary systems such as our solar system take hundreds of millions of years to evolve. Since humanity has only existed for a sliver of that time, astronomers have only observed planetary systems at ...

Step outside just after sunset and you may catch an unusual sight: six planets strung across the sky in a gentle arc. The ...

Nearly all of the solar system’s planets are about to file across the night sky in a planetary alignment, and it will be ...

Baby dinosaurs weren’t coddled like lion cubs or elephant calves—they were more like prehistoric latchkey kids. New research ...

An exoplanetary system about 116 light-years from Earth could flip the script on how planets form, according to researchers who discovered it using telescopes from NASA and the European Space Agency, ...

Wednesday is "Pluto Day," because – yes, of course there is a day for that. And, while celebrating the celestial object that ...

Every once in a while, the outer solar system reminds us that we've only discovered a negligible portion of it, and that the vast majority is still full of surprises. The latest example of this is a ...

Artist's rendition of the space weather around M dwarf TIC 141146667. The torus of ionized gas is sculpted by the star's magnetic field and rotation, with two pinched, dense clumps present on opposing ...

Journey beyond the asteroid belt to explore the solar system's majestic giants and mysterious outer reaches. We break down the science of Jupiter's eternal storm, Saturn's iconic rings, and the frozen ...

A 3-billion-year-old white dwarf, the core of a dead star, consumed an exoplanet from its former planetary system. Credit: NASA / ESA / Joseph Olmsted illustration A dead star core about 145 ...

Astronomers have discovered a distant dwarf planet orbiting beyond Neptune — a frozen world so far from the Sun that it challenges everything we know about how the solar system formed. Annual ...

LONDON — The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper's authors have ...