Six planets are part of the alignment, which will last until Feb. 18. Mercury will join the alignment later in the month.

A team of scientists from the Physical Research Laboratory in Ahmedabad has discovered a giant planet bigger than Earth but ...

HD 20794 d completes its orbit just shy of two Earth years, placing it well within reach of conditions that might harbor life ...

Although the occurrence climaxed on Jan. 21 with a conjunction—close alignment—of Saturn and Mercury, the planetary parade ...

As night falls on the Atacama desert in northern Chile four giant telescopes turn their gaze towards the star-strewn heavens.

Since the discovery of the first planet outside the solar system in the mid-1990s, the catalog of extrasolar planets, or "exoplanets," has grown to over 5,000 entries. Many of these exoplanets are ...

This artist's concept visualizes a super-Neptune world orbiting a low-mass star near the center of our Milky Way galaxy.

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

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

A shortcut for New Yorkers to spot some of the planets is to look for them when they are near the moon. On Feb. 1, Venus will ...

WASP-121b is like nothing in the solar system, raining liquid metal and being puffy like a marshmallow. The origins of these ...