Our home galaxy weighs about as much as 1.5 trillion suns, according to a new study.
Earth's vast magma oceans, roiling deep beneath our feet, seem to be pumping oxygen into the planet's liquid core.
Don't panic; the solar system isn't falling apart, despite the strange dance on display in this incredible footage captured by NASA's Solar Dynamics Observatory.
When the Captain Marvel movie opens, coinciding with International Women's Day, it will be Marvel Studios's first female-superhero led film.
Exos Aerospace flew its SARGE reusable sounding rocket for the second time March 2, but winds kept the rocket from achieving its planned altitude.
This excerpt from Chapter 16 of Rod Pyle's new book "Interplanetary Robots" details the history of the probes that have braved the crushing pressure and fearsome heat of the planet Venus.
The success of SpaceX's test flight to the space station suggests that exciting times are just around the corner, exploration advocates say.
When Ripley the dummy astronaut returned to Earth today (March 8) on SpaceX's Crew Dragon spacecraft, it left its cute "little Earth" behind on the International Space Station.
SpaceX's first Crew Dragon looks like a toasted marshmallow after its fiery re-entry Friday (March 8).
The Crew Dragon capsule splashed down in the Atlantic Ocean off the Florida coast today (March 8) at 8:45 a.m. EST, wrapping up a historic mission to the International Space Station.
If there is a pantheon for great minds, Stephen Hawking and Albert Einstein would undoubtedly qualify for membership.
Capt. Pike has a visitor from his past on Talos IV and Dr. Culber faces his future in the "Star Trek: Discovery" episode "If Memory Serves."
The director of NASA's Marshall Space Flight Center said March 5 that the agency is "reassessing" the 2020 launch date for the first flight of its Space Launch System.