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

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Mercury joins the night sky to complete a 7-planet alignment just after sunset for the end of February. Saturn leaves our ...

Mercury is the closest planet to the sun, followed by Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Mercury orbits ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Expected to launch no earlier than Thursday, Feb. 27, from Vandenberg Space Force Base in California, NASA's SPHEREx space ...

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 has shared details of what to look out for in the night sky this month, with the moon appearing alongside a parade of planets.

The enchanting dunescape stretches over 43 miles (70 km) along the coast and over 30 miles (50 km) inland. Lençois translates ...

If everything in our solar system formed from the same solar nebula, why do the planets have different compositions? Herbert WichTitusville, Florida To better understand why the planets have variable ...

Helium can help scientists detect the speed and direction at which we’re moving through space. Deuterium, which is left over ...

Look to the southwest sky after sunset on Saturday, as the sliver of a waxing crescent moon nears bright Venus with Saturn ...