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 ...

Starting at 12:30 p.m. ET (1730 GMT) on Saturday (Jan. 25), astrophysicist Gianluca Masi of the Virtual Telescope Project will stream live telescope views of all six of the planets in marching order.

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

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?

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.

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

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 ...

But the latest find is for real. Researchers say there’s a 1.3 percent chance that the space rock 2024 YR4 could strike our planet — but not until December 2032. The founder of SpaceX said ...

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 ...