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Watch live: Arianespace Soyuz rocket launching Galileo navigation satellites tonight

The Soyuz rocket will launch at 7:19 p.m. EST (2319 GMT) from the Guiana Space Center in Kourou, French Guiana.  Read more

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A United Launch Alliance rocket carrying the STP-3 mission for the U.S. military, including a NASA laser space communications experiment, stands atop its pad at Space Launch Copmlex 41 of the Cape Canaveral Space Force Station in Florida for a Dec. 5, 2021 launch.

Atlas V rocket launch of US military space mission delayed to Monday. How to watch live.

By Amy Thompson

An Atlas V is scheduled to blast off from Cape Canaveral Space Force Station in Florida at 4:04 a.m. EDT (0904 GMT) on Dec. 6 for the U.S. Space Force.

An Arianespace Soyuz rocket carrying two new Galileo navigation satellites launches into orbit from the Guiana Space Center in Kourou, French Guiana on Dec. 4, 2021.

Arianespace Soyuz rocket launches Galileo navigation satellites into orbit in picturesque nighttime liftoff

By Elizabeth Howell

An Arianespace Soyuz rocket carrying 2 Galileo navigation satellites launched into orbit Saturday night, Dec. 4.

Fortnite's Chapter 2 finale The End flipped the entire Fortnite island to defend reality against the Cube Queen's alien spaceships and monsters.

I fought off alien spaceships, monsters and more in Fortnite's Chapter 2 finale 'The End'

By Elizabeth Howell

Alien spaceships swarmed over the Fortnite island during the season finale of the battle royale game Saturday (Dec. 4).

Michael Burnham (Sonequa Martin-Green) shows that her extra-curricular classes in performance art at the Vulcan Academy were worth it the "Star Trek: Discovery" season 4 episode "Choose To Live."

'Star Trek: Discovery' season 4, episode 3 is stuffed full of subplots and side stories (recap)

By Scott Snowden

So much happens in Star Trek: Discovery's season 4 episode "Choose To Live" that it can be overwhelming.

An artist's impression of NASA's Laser Communications Relay Demonstration mission.

How NASA's new laser communications mission will work in space

By Elizabeth Howell

The goal is to speed up solar system communications.

An Arianespace Soyuz rocket carrying two new Galileo navigation satellites launches into orbit from the Guiana Space Center in Kourou, French Guiana on Dec. 4, 2021.

Rocket launch tonight! Arianespace Soyuz to launches 2 Galileo satellites

By Space.com Staff

An Arianespace Soyuz rocket will launch two new Galileo navigation satellites into orbit Saturday night, Dec. 4, and you can watch it live, courtesy of Arianespace.

Tech

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An artist's impression of NASA's Laser Communications Relay Demonstration mission.

How NASA's new laser communications mission will work in space

By Elizabeth Howell

The goal is to speed up solar system communications.

Rocket Lab's next generation Neutron rocket will have a fully reusable first stage with an integrated fairing that opens like a flower.

Rocket Lab's next-gen Neutron rocket will be reusable (and have a 'Hungry Hippo' nose cone)

By Tereza Pultarova

RocketLab's next-generation reusable Neutron rocket will operate like an aircraft.

  1. Liftoff is now set for 7:19 p.m. EST (0019 GMT) after weather delays.
    1
    Watch live: Arianespace Soyuz rocket launching two Galileo navigation satellites tonight
  2. 2
    I fought off alien spaceships, monsters and more in Fortnite's Chapter 2 finale 'The End'
  3. 3
    'Star Trek: Discovery' season 4, episode 3 is stuffed full of subplots and side stories (recap)
  4. 4
    How NASA's new laser communications mission will work in space
  5. 5
    Rocket launch tonight! Arianespace Soyuz to launch 2 Galileo satellites at 7:19 pm ET

Spaceflight

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An artist's impression of NASA's Laser Communications Relay Demonstration mission.

How NASA's new laser communications mission will work in space

By Elizabeth Howell

The goal is to speed up solar system communications.

An Arianespace Soyuz rocket carrying two new Galileo navigation satellites launches into orbit from the Guiana Space Center in Kourou, French Guiana on Dec. 4, 2021.

Rocket launch tonight! Arianespace Soyuz to launches 2 Galileo satellites

By Space.com Staff

An Arianespace Soyuz rocket will launch two new Galileo navigation satellites into orbit Saturday night, Dec. 4, and you can watch it live, courtesy of Arianespace.

Science & Astronomy

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NASA astronaut Tom Marshburn, riding at the end of the Canadarm2 robotic arm, works to replace a faulty S-band antenna outside of the International Space Station on Thursday, Dec. 2, 2021.

The top space stories of the week!

By Doris Elin Urrutia

These are the top space stories this week from Space.com.

A simulation shows how particles escape from black holes

What are black holes? Facts, theory & definition

By Nola Taylor Tillman, Ben Biggs

reference Black holes are mysterious objects of extreme density, with such strong gravitational attraction that even light cannot escape from their grasp if it comes near enough.

reference

Search For Life

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A UFO hovers over a forest

How would we give aliens directions to Earth?

By Joanna Thompson

Giving aliens directions to Earth might be tricky, but scientists have some ideas for how to do it.

NASA's Perseverance rover captured this image of a successfully collected sample on Nov. 24, 2021, using its Sample Caching System Camera.

NASA's Perseverance rover on Mars just snagged its newest rock sample (photos)

By Mike Wall

Perseverance just snagged its fourth Red Planet sample, drilling another core from an intriguing rock that it sampled a little over a week ago.

NASA's Perseverance rover, which is searching signs of ancient life on Mars.

'False fossils' littered across Mars may complicate the search for life on Red Planet

By Harry Baker

Researchers warn that there are dozens of potential false biosignatures on Mars that could hinder the search for alien life.

Skywatching

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A photo of a nearly full moon. The image was taken one day prior to the supermoon, or a moon that appears larger due to being the closest to Earth in its orbit.

Full moon calendar 2021: When to see the next full moon

By Kimberly Hickok

The full moon happens about once a month. Find out when.

An image of the total solar eclipse of Aug. 21, 2017.

What time is the total solar eclipse on Dec. 4?

By Elizabeth Howell

The big problem might not be time zone, but accessibility of the prime Antarctic site.

The total solar eclipse of Dec. 14, 2020 as seen from Piedra del Aquila, Argentina.

The only total solar eclipse of 2021 will cross Antarctica early Saturday. Here are its stages explained.

By Joe Rao

Early Saturday morning, a total solar eclipse will darken skies at the bottom of the world.

Entertainment

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Fortnite's Chapter 2 finale The End flipped the entire Fortnite island to defend reality against the Cube Queen's alien spaceships and monsters.

I fought off alien spaceships, monsters and more in Fortnite's Chapter 2 finale 'The End'

By Elizabeth Howell

Alien spaceships swarmed over the Fortnite island during the season finale of the battle royale game Saturday (Dec. 4).

"The Boy Whose Head Was Filled with Stars: A Life of Edwin Hubble" (Enchanted Lion Books, 2021)

'The Boy Whose Head Was Filled With Stars,' a beautifully illustrated children's book about Edwin Hubble, is now on sale

By Doris Elin Urrutia

Deals The picture book paints Edwin Hubble's biography in a way that teaches and entertains.

Deals
Disney Plus logo

Streaming deals: Discounts on Disney Plus and Paramount Plus

By Alexander Cox

DEALS These streaming deals will give you tons of great sci-fi content for you to enjoy.

DEALS

References

View more
A simulation shows how particles escape from black holes

What are black holes? Facts, theory & definition

By Nola Taylor Tillman, Ben Biggs

reference Black holes are mysterious objects of extreme density, with such strong gravitational attraction that even light cannot escape from their grasp if it comes near enough.

reference
A photo of a nearly full moon. The image was taken one day prior to the supermoon, or a moon that appears larger due to being the closest to Earth in its orbit.

Full moon calendar 2021: When to see the next full moon

By Kimberly Hickok

The full moon happens about once a month. Find out when.

December 2012 Last Quarter Moon

Moon phases 2021: This year's moon cycles

By Kimberly Hickok, Tim Sharp

Learn about the moon phases and when you can see them.