Here’s what you should know when you go outside to see for yourself: Yes, the planets are indeed lined up across our sky. No, ...

Earliest inner solar system planetesimals shaped the inventory of moderately volatile elements in terrestrial planets.

Earth received water toward the final stages of its formation. This reshapes understanding of the conditions needed for life.

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

An instrument created by a team at the University of New Hampshire was recently installed onto a spacecraft that is preparing ...

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

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

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

What astronomers call a “parade of planets” will be visible in the early evening sky all month. Mark Pitts is an assistant ...

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

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

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