If you dream of becoming an astronaut, the selection process and the job are both pretty grueling. For several reasons, you'd better practice your handshake.

Sleep is a crucial activity for our brains to function properly. But when you’re on the ISS, you face a myriad of distractions and obligations that make it difficult to get good shuteye. So how do these astronauts ever get restful sleep?

The Hubble Space Telescope has been sending home images of the universe for more than thirty years, but none of its work would have been possible without the many servicing missions that kept it up to date.

New ReviewOn February 7, 1984, NASA astronaut Bruce McCandless became the first person to go on a spacewalk without a tether. McCandless was wearing a type of jetpack known as the Manned Maneuvering Unit, or MMU. The MMU fit over a regular EMU...

China's Shenzhou-20 completed their mission's fourth spacewalk outside the Tiangong space station. Credit: Space.com | footage courtesy: China Central Television (CCTV) | edited by Steve Spaleta

NASA astronauts Nichole Ayers and Anne McClain complete egress of the International Space Station during a spacewalk mission. Credit: Space.com | footage courtesy: NASA | edited by Steve Spaleta

On June 3, 1965, NASA astronaut Ed White became the first American to walk in space. White left the safety of his Gemini 4 spacecraft equipped with a spacesuit, a tether and a small gas gun for maneuvering. The spacewalk occurred just...

On May 23, 2017, NASA astronauts Peggy Whitson and Jack Fischer took an urgent and unplanned spacewalk to replace a broken data relay box outside of the International Space Station. The problematic device, known as a...

Chinese astronauts Cai Xuzhe and Song Lingdong conducted a spacewalk outside the Tiangong Space Station. Their tasks includes the "installation of the space station's debris protection device and inspection of extravehicular equipment,"...

Chinese astronauts Cai Xuzhe and Song Lingdong conducted a spacewalk outside the Tiangong space station. "The primary task was "to install debris protection devices outside" Tiangong to "safeguard its external cables from debris impact,"...

NASA astronaut Suni Williams works outside the International Space Station. Credit: NASA | edited by Space.com's Steve Spaleta

Astronauts Ye Guangfu, Li Cong and Li Guangsu are preparing for a 2nd spacewalk aboard the Tiangong space station. They've also been conducting and maintaining combustion experiments.



Credit: Space.com | footage courtesy:...

The Polaris Dawn crew Jared Isaacman, Scott "Kidd" Poteet, Sarah Gillis and Anna Menon explain the experiments conducted during the mission. Also, see a time-lapse of Isaacman's spacewalk.



Credit: Polaris Dawn / edited by...

A SpaceX Dragon crew vents and begins to exit the spacecraft for a spacewalk in this animation. <b<br/>r/>

Credit: SpaceX

This video discusses the role of the US Space Shuttle and the International Space Station (ISS). It highlights the recent spacewalk conducted by Russian and American astronauts to install antenna and laser reflectors for automated...

This video explains the significance of the Hubble Space Telescope and the challenges faced during its final servicing mission. It highlights the importance of on-orbit repair and the advancements made in space technology. Ultimately, it...

Dr. Forrester examines the technological innovations in the study of space by giving examples of innovations which have led to advances in space programs. She also identifies space travel programs by exploring NASA and the efforts that...

Dr. Forrester describes the history of the space race and space exploration. She summarizes Alan Shepard’s contribution to space exploration by recognizing him as the first man in space. She also recognizes Neil Armstrong by recognizing...

Learn all about signals and satellites and how can it help us through a story

A spacewalk (or extravehicular activity) is the term used to describe movement of astronauts outside the spacecraft. Learn about the types of spacewalks astronauts engage in and the training they go through to prepare.

Retired NASA astronaut John Grunsfeld hosts this six-part mini-series about the tools used on the Hubble Space Telescope servicing missions. Hubble was uniquely designed to be serviced in space so that components could be...

In this first video of NASA's Hubble Memorable Moments series celebrating Hubble's 25 years, the telescope must be completely powered off to replace Hubble's heart.



In 1999, engineers at NASA's Goddard Space Flight Center...

Retired NASA astronaut John Grunsfeld hosts this six-part mini-series about the tools used on the Hubble Space Telescope servicing missions. Hubble was uniquely designed to be serviced in space so that components could be...

In this second video of NASA's Hubble Memorable Moments series celebrating Hubble's 25 years, the team scrambles to work out an unusual solution to a problem encountered during an instrument repair.



The Space Telescope...