In a celestial event known as a great alignment the five planets will be discernible with the naked eye, but to see Neptune ...

The acid yellow moon Io that orbits Jupiter may be less than 30% the size of Earth, but is considered the most volcanic body ...

I pick out North America’s celestial highlights for the week ahead (which also applies to northern hemisphere mid-northern ...

New James Webb Space Telescope observations of a star cluster called NGC 346 are shedding light on how, when and where ...

NASA’s Juno mission found Io’s biggest volcanic eruption ever. The explosion was stronger than all Earth’s power plants ...

February brings a rare planetary parade, with five bright planets in clear view and a special alignment of Mercury and Saturn ...

Welcome to this month’s edition of “What’s up in the sky?” February has a nice lineup of planets and some eye-catching ...

NASA's Juno spacecraft has spotted the most powerful volcanic eruption ever seen on the solar system's most volcanic body, ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but get a telescope and you can spot Neptune and Uranus.

SkywatchingSkywatching HomeWhat's UpEclipsesExplore the Night SkyNight Sky NetworkMoreTips and GuidesFAQ A Month of Bright PlanetsVenus ...

Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to ...

This is the last chance to catch the pair in conjunction this year—with Venus set to be unusually bright in the night sky.