An Atlas V rocket topped with two "neighborhood watch" satellites is scheduled to lift off from Florida's Cape Canaveral Space Force Station Friday at 2 p.m. EST (1900 GMT).
The tally is something like 61 million Olympic-sized swimming pools.
Does the simulation hypothesis offer a compelling argument, or is it just interesting food for thought? Let's find out.
Watch the sun set from a particularly dark patch of Earth and you may spot a triangle of what scientists call zodiacal light extending from where our star passed below the horizon.
NASA's Neil Gehrels Swift Observatory has temporarily stopped its science observations while the mission team investigates an issue.
Get to know our nearest stars, their distances in light-years, spectral types and their known planets.
A SpaceX resupply ship will have to wait at least one more day before returning to Earth.
Stunning views of the aftermath of the Tonga volcano eruption have been snapped by astronauts at the International Space Station.
NASA's Ingenuity Mars helicopter has notched yet another milestone — the first weather-related flight delay on another planet.
Spacecraft prep and orbital traffic pushed the first all-private space station mission one month later.
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