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An artist's impression of a Global Positioning System (GPS) satellite in orbit.

Trump signs Space Policy Directive-7 on improving GPS cybersecurity

By Samantha Mathewson

A new space policy highlights the fundamental role of Global Positioning Systems (GPS) in securing the United States' safety and economic growth.

This NASA illustration depicts an O'Neill Cylinder: a floating human habitat orbiting an alien planet. A new paper proposes building a mega-colony of them around the dwarf planet, Ceres.

Humans could move to this floating asteroid belt colony in the next 15 years, astrophysicist says

By Brandon Specktor

A new paper proposes building a 'megasatellite' of human habitats around the dwarf planet Ceres.

Spaceflight

A SpaceX Falcon 9 rocket launches the SXM-7 Sirius XM radio satellite into orbit on Dec. 13, 2020. The same rocket booster will launch on its eighth flight on Jan. 18, 2020 to deliver 60 Starlink internet satellites to orbit.

Watch live Friday: SpaceX launching Transporter-1 satellite rideshare mission @ 9:24 am ET

By Space.com Staff

A SpaceX Falcon 9 rocket will launch the Transporter-1 rideshare mission with dozens of satellites from Cape Canaveral on Friday, Jan. 22, at 9:24 a.m. EST (1424 GMT). Watch it live!

The fully assembled Starliner spacecraft being prepared to fly Boeing’s Orbital Flight Test-2 is lifted inside the Starliner production factory at Kennedy Space Center in Florida, on Jan. 13, 2021.

Boeing's Starliner spacecraft software passes qualification review for next NASA test flight

By Elizabeth Howell

The uncrewed test flight will launch in March.

Science & Astronomy

This Mars meteorite, which weighs 0.75 pounds (327 grams), landed in July 2011 as part of a shower in the vicinity of Tissint, Morocco, the location that gives the meteorite its name. A cross section of a small Aguas Zarcas fragment shows colorful clays that might include complex organic compounds. Water may have recently flowed within meteorites, suggesting the asteroids they broke off from may bear ice, a new study finds.

Did water once flow through meteorites?

By Charles Q. Choi

Water may have recently flowed within meteorites, suggesting the asteroids they broke off from may bear ice, a new study finds.

A view of a spiral galaxy seen nearly edge-on.

A galactic sideswipe 3 billion years ago warped our Milky Way galaxy

By Elizabeth Howell

New data from the Sloan Digital Sky Survey and Europe's Gaia spacecraft suggest that a brush with another galaxy caused the strange, potato chip-like "warp" in our Milky Way galaxy.

Search For Life

U.S. Navy videos of alleged UFO sightings were previously available but had not been officially declassified.

CIA releases entire collection of UFO-related documents to truth-seeking website

By Brandon Specktor

The CIA just turned over 2,700 pages of UFO-related material to The Black Vault, a free repository of UFO records online.

An alien machine already visited us, Harvard astrophysicist still contends

By Rafi Letzter

Harvard astrophysicist Avi Loeb has reignited a debate about whether alien life can explain an object that visited the solar system in 2017 in a scathing new book.

Blue UFO soars over Hawaii before crashing into the sea

By Laura Geggel

Multiple people saw a strange blue light whiz over Oahu, Hawaii.

Skywatching

(Left) The SOHO observatory spotted comet C/2020 X3, seen in the bottom left-hand corner. (Right) A composite image shows the sun's corona as seen during the total solar eclipse on Dec. 14, 2020.

This tiny comet photobombed the total solar eclipse of 2020

By Kasandra Brabaw

Looking closely at eclipse images, stargazers can spot a newfound Kreutz sungrazer comet that zoomed by the Sun during Chile and Argentina's solar eclipse.

Spot several star clusters in the winter night sky.

How to spot the Pleiades, Hyades and other star clusters in the winter night sky

By Joe Rao

The Vespera smart telescope from the French startup Vaonis.

Vespera, a smart telescope to make astrophotography easier, nabs CES 2021 Innovation Award

By Hanneke Weitering

Vaonis, a French startup that raised eyebrows in 2018 with its sci-fi robot-looking Stellina smart telescope, has revealed its latest newbie-friendly astrophotography invention.

Entertainment

Space Chat with Space.com: Tune in Fridays for science, space and more!

By Chelsea Gohd

This Friday (Jan. 22), "Space Chat" will explore brown dwarfs.

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By Space.com Staff

Plus grab a print subscription today and get 3 issues for only $3

The Alien Universe is being resurrected at Marvel Comics in March 2021.

Here's a frightening 1st look at the newly-resurrected 'Alien' series from Marvel Comics

By Jeff Spry

Marvel Comics relaunches the "Alien" comic book franchise in 2021 with this terrifying tale of a Weyland-Yutani mercenary battling a new breed of xenomorph creature.

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