Just as Earth orbits the sun, most planets discovered beyond our solar system orbit a host star. But some are out there all ...

The Orionids is predicted to peak on the evening of Oct. 20 and the morning of Oct. 21. The meteor shower is noted for its ...

The solar system is a grand cosmic stage where each planet and moon plays a unique role in a story billions of years in the making. From Mercury’s shrinking surface and Venus’s runaway greenhouse ...

From lava worlds to gas giants, NASA says the variety of these worlds is staggering—and that signs of a further 8,000 distant ...

Spooky season has arrived, and we'll be gifted yet again with the cosmic light show of the Orionids meteor shower. Starting last week, its peak will hit during a new moon later this month, making it ...

In a little less than a year from now, Jupiter and the moon will be part of one of the best celestial highlights of 2026. On ...

Caltech researchers have developed a new simulation of the hydrological cycle on Jupiter, modeling how water vapor condenses ...

The early solar system is still a bit of a mystery to scientists, but the secret to learning Jupiter's origins might be ...

Another, even rarer view is to see our planet from the surface of another world—something, in fact, that first occurred only in 2004, when NASA’s Spirit rover on Mars snapped an image of Earth in that ...

Observing 3I/ATLAS in this active phase will give some of the clearest insights yet into the mystery of interstellar comets.

When Earth is opposite Mars from the sun, it will appear full because you’re looking directly on the daylit side. But ...

Jupiter’s immense size and gravity would make humans 11 times heavier, tear apart our Moon into rings and pull asteroids toward Earth in catastrophic waves.