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Watch live: Astronauts taking spacewalk to install new space station solar arrays

NASA astronaut Shane Kimbrough and ESA's Thomas Pesquet will spend 6 hours working outside the station. Read more. 

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The Indonesian satellite Palapa-B1 is seen in orbit after being released from NASA's space shuttle Challenger during the STS-7 mission in June 1983.

On This Day in Space! June 20, 1983: Space Shuttle Challenger deploys Palapa B satellite

By Hanneke Weitering

On June 20, 1983, space shuttle Challenger astronauts deployed an Indonesian communications satellite called Palapa-B1. See how it happened in our "On This Day In Space" series!

The summer season officially arrives for Earth' Northern Hemisphere on June 20, 2021 during the June solstice, which also marks the start of winter in the Southern Hemisphere.

Summer solstice 2021 on Father's Day, the longest of the year, marks Earth's changing seasons

By Samantha Mathewson

The official start of summer kicks off in the Northern Hemisphere today (June 20) to make Father's Day the longest day of the year.

Grimlock, the Autobot T-rex Transformer, will star in his own sci-fi fantasy miniseries from IDW in summer 2021.

King Grimlock rules in IDW's wild 'Transformers' summer comic series

By Jeff Spry

Writer Steve Orlando and artist Agustin Padilla deliver a rousing sci-fi adventure in IDW's "Transformers: King Grimlock" miniseries.

Here, a few of the 100,000 stellar nurseries mapped in a new service from the ALMA radio telescope.

100,000 star nurseries mapped in first-of-its-kind survey

By Ben Turner

The researchers say that they want to use the survey to better understand our own place in the universe.

ESA astronaut Thomas Pesquet riding the space station's robotic arm during a space walk.

Astronauts will install a new solar array on the International Space Station in a spacewalk today. Here's how to watch.

By Elizabeth Howell

Two astronauts plan to continue their solar array work after running out of time during a spacewalk last week.

An X-wing fighter from "Star Wars: The Rise of Skywalker" undergoes restoration for display at the Smithsonian Air and Space Museum in Washington, D.C.

Iconic 'Star Wars' X-wing fighter finds a new home at the Smithsonian Museum

By Jeff Spry

Lucasfilm Ltd. has loaned an actual "Star Wars" X-wing starfighter artifact to the Smithsonian Museum for restoration and display in Washington D.C.

Tech

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Lego has an epic new R2-D2 droid, its biggest and best yet, available since May 4, 2021.

The best Star Wars Prime Day deals and gifts for 2021

By Space.com Staff

We've been scouring the web for all the best Star Wars Prime Day gifts to give loved ones (including yourself of course).

Views of best telescopes against a starmap background.

Best telescopes 2021: Top picks for beginners, viewing planets, astrophotography and all-arounders

By Gemma Lavender, All About Space magazine

Whatever your budget, experience in astronomy or targets that interest you most, there’s a great telescope out there just for you — we’ve rounded up the very best

Spaceflight

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The Indonesian satellite Palapa-B1 is seen in orbit after being released from NASA's space shuttle Challenger during the STS-7 mission in June 1983.

On This Day in Space! June 20, 1983: Space Shuttle Challenger deploys Palapa B satellite

By Hanneke Weitering

On June 20, 1983, space shuttle Challenger astronauts deployed an Indonesian communications satellite called Palapa-B1. See how it happened in our "On This Day In Space" series!

The U.S. Postal Service has released "Sun Science," a set of 10 postage stamps featuring imagery from NASA's Solar Dynamics Observatory (SDO) of our nearest star.

US Postal Service releases 'Sun Science' stamps with NASA imagery

By Robert Z. Pearlman

USPS released "Sun Science," a collection of 10 colorful stamps celebrating the study of heliophysics using imagery from NASA's Solar Dynamics Observatory.

Science & Astronomy

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The summer season officially arrives for Earth' Northern Hemisphere on June 20, 2021 during the June solstice, which also marks the start of winter in the Southern Hemisphere.

Summer solstice 2021 on Father's Day, the longest of the year, marks Earth's changing seasons

By Samantha Mathewson

The official start of summer kicks off in the Northern Hemisphere today (June 20) to make Father's Day the longest day of the year.

The U.S. Postal Service has released "Sun Science," a set of 10 postage stamps featuring imagery from NASA's Solar Dynamics Observatory (SDO) of our nearest star.

US Postal Service releases 'Sun Science' stamps with NASA imagery

By Robert Z. Pearlman

USPS released "Sun Science," a collection of 10 colorful stamps celebrating the study of heliophysics using imagery from NASA's Solar Dynamics Observatory.

Search For Life

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This image looking west toward the Séítah geologic unit on Mars was taken from the height of 33 feet (10 meters) by NASA’s Ingenuity Mars helicopter during its sixth flight, on May 22, 2021.

NASA's Perseverance rover begins 1st science campaign on Mars

By Mike Wall

NASA's Perseverance Mars rover has kicked off its highly anticipated science campaign with a Red Planet road trip.

NASA announced in June 2021 that it will launch two missions to Venus in the 2028-2030 timeframe.

Why Venus is back in the exploration limelight

By Mike Wall

We may be witnessing the start of a bona fide Venus exploration campaign.

This still is from a U.S. Navy jet's video of a UFO sighting.

Report: NASA investigating UFO sightings, agency chief says

By Mike Wall

NASA chief Bill Nelson told CNN that he has asked agency researchers to look into the spate of UFO sightings that U.S. Navy pilots have reported over the past two decades.

Skywatching

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Views of best telescopes against a starmap background.

Best telescopes 2021: Top picks for beginners, viewing planets, astrophotography and all-arounders

By Gemma Lavender, All About Space magazine

Whatever your budget, experience in astronomy or targets that interest you most, there’s a great telescope out there just for you — we’ve rounded up the very best

Best binoculars 2021: Top picks for skywatching, nature and travel from Celestron, Nikon and other great brands

By Gemma Lavender, All About Space magazine

Our recommended binoculars for touring the night sky and watching wildlife in action

Observing through beginner telescope

Best telescopes for beginners 2021: Recommended from Celestron, Orion, Sky-Watcher and more

By Gemma Lavender, All About Space magazine

Looking for your first telescope but unsure where to start? Space.com has made the search easier with our top pick of great reflectors, refractors and computerized telescopes

Entertainment

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Grimlock, the Autobot T-rex Transformer, will star in his own sci-fi fantasy miniseries from IDW in summer 2021.

King Grimlock rules in IDW's wild 'Transformers' summer comic series

By Jeff Spry

Writer Steve Orlando and artist Agustin Padilla deliver a rousing sci-fi adventure in IDW's "Transformers: King Grimlock" miniseries.

"War of the Worlds" season 2 has begun on EPIX.

Humanity fights back in EPIX's 'War of the Worlds' season 2

By Jeff Spry

Gabriel Byrne returns to lead humanity's resurrection in this latest trailer for EPIX' "War of the Worlds" season 2.

Captain Jean-Luc Picard beams into the mobile game Star Trek Fleet Command for Captain Picard Day in June 2021.

You can celebrate Captain Picard Day in 'Star Trek Fleet Command' right now

By Elizabeth Howell

The mobile "Star Trek" game "Star Trek Fleet Command" is boldly offering a one-week celebration of Jean-Luc Picard this week.