Six planets will appear close together after sunset in a rare planetary parade. Here is how and when to see this beautiful sky event.

That means if aliens were to exist, and they were located some 66 million light-years from Earth, they’d theoretically still ...

How big would a telescope need to be to see Earth’s dinosaurs from 66 million light-years away? Think big—and then think ...

Computer simulations suggest NASA’s Habitable Worlds Observatory could detect Earth-like exomoons around gas giant exoplanets through reflected starlight and lunar eclipses.

This weekend, if the clouds give way, skywatchers in the UK might be in for a treat. Six planets are reportedly gathering in ...

Six planets are set to align on Saturday, creating a planetary parade that will be visible to sky-gazers across the globe.

Check your weather forecast for clear skies, so you don't miss the spectacular astronomical events occurring throughout the ...

But in 2006, Pluto was in the headlines again, as the Paris-based International Astronomical Union (IAU) redefined “planet” in a such a way that it was excluded from the official canon.

The Earth's magnetic field and oxygen evolved together over 540 million years, according to a major NASA study.

On 8 and 9 June, two bright planets - Venus and Jupiter - would appear in the sky only a pinky finger distance apart from our perspective on Earth, despite being millions of miles from one another.

New research using NASA’s James Webb Space Telescope examines the maximum sizes of gas giant exoplanets, measuring chemical compositions and formation processes in the HR 8799 system.

A six-planet parade — an alignment of Mercury, Venus, Neptune, Saturn, Uranus and Jupiter — is coming Feb. 28. When and where to watch it in Ohio.