For several days this month, Saturn, Mars, and Mercury appear just degrees apart before sunrise—close enough to watch their ...

Scientists have discovered unexpected water-ice clouds on a distant, Jupiter-like exoplanet, challenging current atmospheric ...

A strange planetary system called TOI-201 is changing in real time, with three very different worlds pulling on each other.

A rare planetary alignment peaks April 20, with Mercury, Mars, and Saturn clustering at dawn. Here’s where travelers should ...

For those who enjoy viewing the night sky, a unique opportunity is just around the corner late this month. Six planets in the solar system are going to align in the western sky just after sunset.

Planets, like those in our solar system, form in a bottom-up process where small bits of rock and ice clump together and grow larger over time. But the heftier the planet, the harder it is to explain ...

Humanity has built some incredibly destructive weapons. There are still roughly 12,000 nuclear warheads on Earth today, ...

Add Yahoo as a preferred source to see more of our stories on Google. Stockton LaSalle uses a telescope to view the moon while the “Great Conjunction” of Saturn and Jupiter is visible in the top left ...