A Russian Soyuz rocket launched a top-secret military satellite designed to scope out other satellites in space on Monday (Nov. 25), according to government reports.
The tiny planet Mercury scooted across the sun's face today (Nov. 11) for the last time until 2032, and skywatchers around the world had the chance to witness the rare celestial event.
The Mercury transit on Nov. 11 will be accessible to amateur astronomers, as long as they have the right equipment to view it safely.
Gusting winds in northern California are helping the spread of the Kincade fire, as shown in a new animation from NASA.
Our home galaxy stole several dwarf galaxies that used to belong to the Large Magellanic Cloud (LMC), a galaxy near the Milky Way.
One of the year's brightest meteor showers is about to take flight. If you face cloudy or light-polluted skies at home, however, never fear — the Perseids will also be streamed online.
Presidential candidate Bernie Sanders (D-VT) says he's prepared to disclose government information about UFOs if he wins in 2020.
Japanese satellite shows where the ground was broken up and even sliced open during the twin earthquakes near Ridgecrest.
A sharp-eyed NASA spacecraft spotted the probable remains of an Israeli spacecraft that crash-landed on the moon last month.
Science popularizer Bill Nye told viewers of a popular late-night show that Earth is "on [expletive] fire" while lighting a globe with a blowtorch.
A new image from the venerable Hubble Space Telescope shows what happens when two galaxies collide — an experience our own Milky Way will have in a few billion years.
With research on extraterrestrial life continuing across the world, a noted researcher from the SETI Institute launched a new tool to help researchers keep track of results.
New research suggests why Jupiter, the largest planet in the solar system, waited about two million years for its early-formation growth spurt.
The Parker Solar Probe's mission is to "touch the sun." What does that really mean though since the sun is a sizzling ball of gas?
Astronomers just captured a first-of-its-kind image of a newborn alien world — which has been developing in a nursery of dust and gas for more than 5 million years.
President Donald Trump's call this week that to create a sixth branch of the U.S. military — which he called the "Space Force" — has reopened a wider debate on the military's role in space.
Every time that space crews launch from the Baikonur Cosmodrome in Kazakhstan, they literally follow in the footsteps of the first human in space – Yuri Gagarin.
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