A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

Our modern era of space observation and exploration deepens our connection with the universe—and with each other. When NASA ...

NASA was formed in 1958 "to provide for research into problems of flight within and outside the Earth's atmosphere, and for ...

Stargazers will be treated to a dazzling six- and seven-planet "alignments" in February. A planetary alignment, or a "planet ...

To solve that problem, a team of German researchers at the Technical University in Berlin figured that, instead of having a ...

Next, real target stars had to be selected ... a radius between Earth’s and Neptune’s — unlike any planet in the Solar System. Is there life on Jupiter’s moon Europa?

What an amateur astronomer recently took to be a newly-discovered asteroid turned out to be a Tesla Roadster voyaging through the cosmos.

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.

Uranus and Neptune are there too, technically, but they don't appear as 'bright planets'," NASA's Preston Dyches explained in a stargazing video guide. Stock illustration of all the solar system's ...

According to astronomers, there are approximately 200 billion trillion stars in our observable universe — chances are, ...

There are eight planets in the solar system, and each travels on its own path around the sun. But of these planets, which is nearest to the sun? Mercury is a strange little world. There are some ...