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Early data from the Planck collaboration maps microwaves across the sky.

Why some physicists really think there's a 'mirror universe' hiding in space-time

By Rafi Letzter

What happens when you turn space-time upside-down?

An artist's depiction of astronauts walking on the moon as part of NASA's Artemis program.

Don't expect NASA's 1st Artemis astronauts to drive on the moon in a fancy lunar car

By Meghan Bartels

Last year, NASA set itself an ambitious goal: Send astronauts to walk on the moon in 2024. Now, the agency is busy planning what astronauts will do during those excursions.

Artist's illustration of StartRocket's planned Foam Debris Catcher extruding junk-snagging foam.

Foam 'spider webs' from tiny satellites could help clean up space junk

By Mike Wall

The Russian startup StartRocket is developing a "Foam Debris Catcher," a small, autonomous satellite that would snag and de-orbit space debris using sticky polymer foam.

A Chinese Long March 3B rocket launches the final Beidou navigation satellite into orbit from the Xichang Satellite Launch Center in southwest China on June 23, 2020.

China launches final Beidou satellite to complete GPS-like navigation system

By Elizabeth Howell

China successfully launched the final member in its Beidou satellite constellation Tuesday (June 23) completing a new global navigation system 30 years in the making.

On Monday (June 22), NASA's Johnson Space Center in Texas penned a Space Act Agreement with the spaceflight company Virgin Galactic to develop a "private orbital astronaut readiness program."

Virgin Galactic will work with NASA to train private astronauts for orbital spaceflights

By Chelsea Gohd

NASA and Virgin Galactic have signed a Space Act Agreement, under which they will work together to support commercial space activity.

Virgin Galactic's VSS Unity spaceliner captured this view of Earth during the vehicle's first trip to space, on Dec. 13, 2018.

NASA wants to send astronauts on private suborbital spaceflights

By Elizabeth Howell

NASA's administrator says he wants to step up commercial flight opportunities for astronauts.

Kathy Sullivan, the first astronaut to dive to Challenger Deep, the deepest point on Earth, and pilot Victor Vescovo speak to the crew aboard the International Space Station, including NASA astronauts Bob Behnken, Doug Hurley and Chris Cassidy, while at sea aboard the DSSV Pressure Drop ship on June 7, 2020.

Astronaut-aquanaut connects with space station after deep sea dive

By Robert Z. Pearlman

When ISS astronauts call Earth, they refer to it as "space to ground." For a call they made to Kathy Sullivan, the first astronaut to dive to the deepest point on Earth, a different term was merited.

NASA astronaut Chris Cassidy shared four photographs of the annular solar eclipse as seen from the International Space Station on June 21, 2020.

See the moon's shadow on Earth from the 'ring of fire' solar eclipse in amazing space views

By Meghan Bartels

A "ring of fire" solar eclipse crossed over Africa and Asia this weekend, and the view from space was spectacular.

Pluto, as seen by NASA's New Horizons spacecraft during its historic flyby of the dwarf planet in July 2015.

Surprise! Pluto may have had an underground ocean from the very beginning

By Charles Q. Choi

Though Pluto is now famously frigid, it may have started off as a hot world that formed rapidly and violently, a new study finds.

This vertical panorama, composed of four images, shows a strong zodiacal light coming from the region where planet Venus was located, in the western sky of Pampilhosa da Serra, Dark Sky Aldeias do Xisto, Portugal.

Zodiacal Light meets the Milky Way in stunning night sky photo

By Miguel Claro

The rare zodiacal light zodiacal light beams up at the Milky Way in this photo captured from Portugal's new "starlight tourism" destination.

This visualization depicts NASA's Cassini spacecraft flying through plumes on Enceladus in October 2015.

Our Milky Way galaxy may be teeming with ocean worlds

By Chelsea Gohd

Far-off alien planets covered in vast oceans might be common in our Milky Way galaxy, scientists find.

Artistic depiction of a tunnel or wormhole over curved space-time.

Weirdly-shaped wormholes might work better than spherical ones

By Paul Sutter

Otherwise, they'd be ferociously unstable.

The Hubble Space Telescope studied two dramatic planetary nebulas, the Butterfly Nebula and a second that resembles a jewel-bug.

Behold! Hubble telescope catches stunning photos of planetary nebula fireworks

By Meghan Bartels

Incredible new images from the Hubble Space Telescope reveal nearly dead stars spewing blasts of hot gas into deep space in strange but stunning ways.

"Star Trek Timelines" puts you in command of Trek characters from every series.

'Star Trek Timelines' celebrates Pride Month with new LGBTQ+ characters

By Elizabeth Howell

Role-playing game "Star Trek Timelines" released three new LGBTQ characters to celebrate Pride Month.

CBS has launched a #StarTrekUnited campaign to promote unity and made 15 culturally relevant episodes from the franchise free online.

CBS launches #StarTrekUnited campaign to promote unity

By Elizabeth Howell

It includes a 15-episode streaming festival online.

A single shot photo features a golden full moon rising above the landscape of Alandroal, in Portugal's Dark Sky Alqueva Reserve, on Nov. 12, 2019.

A golden moon rises above the fields of Portugal's Dark Sky Alqueva reserve (photo)

By Miguel Claro

This dreamy night-sky photo features a golden full moon rising above the landscape of Alandroal, Portugal, in Dark Sky Alqueva, the world's first "starlight tourism destination."

This combination of pictures created on June 21, 2020 shows the moon moving in front of the sun during an annular solar eclipse as seen from (top L to R) Kurukshetra, Allahabad, Bangalore and (bottom L to R) Kolkata, New Delhi, Bangalore on June 21, 2020. (

'Ring of fire' solar eclipse of 2020 dazzles skywatchers across Africa and Asia

By Chelsea Gohd

The sun and moon converged in a dazzling "ring of fire" solar eclipse Sunday (June 21), stunning skywatchers across parts of Africa, Asia and more.

An annular eclipse captured by the Hinode satellite on Jan. 4, 2011.

Replay! Slooh webcasts the 'ring of fire' annular solar eclipse of 2020

By Space.com Staff

Astronomers with the Slooh online observatory will host a free webcast of the "ring of fire" solar eclipse of 2020 on Sunday, June 21, at 1 a.m. EDT (0500 GMT). Watch it live here!

Photographer Alexander Krivenyshev of WorldTimeZone.com captured the "ring of fire" annular solar eclipse of Dec. 26, 2019 from Al Hofuf in Saudi Arabia.

'Ring of fire' solar eclipse 2020: Here's how it works (and what to expect)

By Joe Rao

A "ring of fire" solar eclipse, the only annular eclipse of 2020, will wow skywatchers in the Eastern Hemisphere. Here's how it works.

Google celebrated the summer solstice of June 20, 2020 for the Northern Hemisphere (and winter in the Southern Hemisphere) with fun Google Doodles.

Happy, summer solstice 2020! Google Doodle celebrates Earth's changing seasons

By Tariq Malik

It's official: Summer is here for Earth's Northern Hemisphere while winter arrives in the south and Google, as always, is celebrating with artful style.