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From left to right: Katherine Johnson, Mae Jemison, Peggy Whitson.

The most famous women in NASA history

Women have played crucial roles in NASA's history of space exploration.
NASA astronauts have donned a lot of different spacesuits over the decades.

Here’s every spacesuit NASA astronauts have worn since the 1960s — and new models that may soon arrive

Astronaut spacesuits debuted in the 1960s but continue to evolve as NASA and companies like Boeing and SpaceX push to explore the moon and Mars.
NASA astronaut Mike Hopkins in a spacesuit outside the International Space Station on Dec. 24, 2013.

NASA astronaut Peggy Whitson has spent more days in space than any other American — here’s how much time US astronauts have logged in spac...

American astronauts have racked up an impressive amount of time in zero gravity. Here are the top 15 record-holding US astronauts.
Jeff Bezos is the founder of Blue Origin, a rocket company that's trying to dramatically reduce the cost of access to space.

Jeff Bezos hinted that Elon Musk should ‘go live on the top of Mount Everest for a year’ if he wants to populate Mars

During a private talk about his rocket company Blue Origin, billionaire Jeff Bezos indirectly discounted Elon Musk and SpaceX's plans to settle Mars.
SpaceX's "test hopper," an experimental stainless-steel ship, in Texas. The person at the bottom is for scale.

Elon Musk says he is ‘confident’ people could afford to ‘sell their home on Earth’ and move to Mars on a SpaceX rocket

SpaceX founder Elon Musk said the first tickets to Mars may cost about $500,000 but eventually could cost less than $100,000 on his new launch system, Starship.
An image composite of Pluto (right) and its moon Charon (left).

A ‘ridiculous’ yet simple animation by a NASA scientist shows how long it takes light to reach Pluto. If you plan to watch it, take a day ...

A scientist at NASA animated how long it takes light to travel from the sun to Pluto. The six-hour movie shows just how slow light-speed can be.
An illustration of Earth and the moon.

The speed of light is torturously slow, and these 3 simple animations by a scientist at NASA prove it

A scientist at NASA animated how long it takes light to travel around Earth, to the moon, and to Mars. The movies show just how slow light can be.
The famous "Earthrise" photo taken by Apollo 8 astronauts during their trip around the moon on Dec. 24, 1968.

Apollo astronaut Jim Lovell, who saw Earth rise over the moon 50 years ago, says ‘you go to heaven when you are born’

"God has really given us a stage on which we perform," said Apollo 8 and Apollo 13 astronaut Jim Lovell. "How that play turns out is up to us."
Elon Musk is making a "radical" change to the design of SpaceX's mega-rocket and spaceship for travel to Mars.

Elon Musk is making a ‘radical change’ to SpaceX’s monster Mars rocket — and renamed its parts ‘Starship’ and R...

SpaceX founder Elon Musk redesigned the company's reusable Big Falcon Rocket for deep-space travel and renamed its parts "Starship" and "Super Heavy."
Jeff Bezos

Here’s the long-lost 1975 TV episode that Jeff Bezos makes people watch to understand what his space company is all about

In 1975, a WNET television show called "The Roundtable" featured sci-fi author Isaac Asimov and futurist Gerard O'Neill discussing how humans could live in space inside giant colonies. The TV episode inspired Jeff Bezos to build rockets but was lost in a New Jersey storage unit for nearly 45 years.