The moon's South Pole-Aitken basin is the largest known crater in existence, and there's something big hidden underneath.

There's a region of Earth's atmosphere known as the South Atlantic Anomaly, and it’s one of the most dangerous near-Earth areas of space, both for satellites and humans.

So, why doesn't the moon just crash into the Earth? And why doesn't the Earth crash into the Sun? What are orbits exactly and why do they happen? Well, it has to do with gravity and velocity. In this episode of Crash Course Kids, Sabrina...

New ReviewOn February 28, 1959, the U.S. Air Force launched a new spy satellite prototype called Discoverer 1. This was the first satellite that NASA launched toward the south pole in an attempt to put it in a polar orbit. But the mission didn't...

New ReviewSunspot AR4366 has been very active with several flares recorded, the biggest of them being an X8.3-class solar flare. NOAA's GOES-17 satellite captured the fireworks. Credit: Space.com | footage courtesy: CIRA/NOAA

New ReviewChina's Long March 3B rocket launched the Shiyan-21 satellite from the Xichang Satellite Launch Center. "The satellite will be mainly used for satellite communication, radio and television, data transmission and other services,"...

India's Launch Vehicle Mark-3 (LVM3) launched the CMS-03 spacecraft, also known as GSAT-7R, from Satish Dhawan Space Centre.



"The LVM3 deployed the 9,700-pound (4,400-kilogram) CMS-03 into geostationary transfer orbit about...

On Oct. 4, 1957, the Soviet Union launched Sputnik 1, the satellite that started the Space Race.



Sputnik 1 was the first human-made object to orbit the Earth, and it set off a wave of fear and anxiety across the U.S. now known...

A satellite in elliptical orbit speeds up as it approaches the planet—thanks to angular momentum conservation. Learn how to calculate angular speed at perihelion using Kepler’s laws and orbital geometry.

From land to sea to space, scientists are using incredible tools to make new discoveries. These are the ten largest instruments in use around the world.

The problem of space debris is solvable if we work together.

Extreme isolation is something our greatest explorers have faced in varying degrees. Now, a team of six NASA recruits have begun a year-long mission on the desolate side of a barren Hawaiian volcano that will simultaneously test the...

Interesting facts about 'The Martian,' a critically acclaimed science fiction movie starring Matt Damon that tells the story of a NASA astronaut who gets stranded on Mars.

What is geomatics? Why it's the branch of science that deals with the collection, analysis, and interpretation of data relating to the earth's surface. How is it done? Well we've got Nigel here to tell us all about it! You may know about...

'Jaw-dropping' satellite images show storm swirling toward US west coastCIRA

Researchers are satellite-tracking reticulated giraffes in northern Kenya, a species found nowhere else in the world. Only about 8,500 live in the wild.

Greece wildfires seen from space in shocking satellite imagesSource: First four pictures - Maxar Technologies, Twitter. All other images - Planet Labs PBC.

On July 7, 1961, the U.S. Air Force launched a satellite called Discoverer 26 into orbit with a classified payload. Discoverer 26 was part of a series of reconnaissance or spy satellites whose missions were kept top-secret by the...

ESA's Biomass spacecraft recently unfurled its antenna reflector. Watch footage from space and animation of the deployment. Credit: Space.com | footage & animation: ESA/ATG medialab | edited by Steve Spaleta

On June 15, 2011, Iran launched satellite Rasad-1 into orbit around Earth. Rasad-1 (the name means Observation 1 in Farsi) is an imaging satellite that was sent into a 162-mile orbit by an Iranian Safir rocket. This was Iran's third...

On May 17, 1974, NASA launched the first Synchronous Meteorological Satellite, SMS-1. This was the first satellite designed to monitor meteorological conditions from a geostationary orbit. This kind of orbit allowed it to stay above a...

On April 26, 1962, Britain launched its first satellite, Ariel 1. This made the United Kingdom the third country to have a satellite in orbit after the U.S. and the Soviet Union — but they didn't launch it themselves. Ariel 1 launched on...

On April 24, 1970, China became the fifth nation to independently launch a satellite into orbit. Dong Fang Hong I was the first of a series of satellites China launched under the Dong Fang Hong space satellite program. It lifted off on a...

On April 15, 2005, NASA launched a spacecraft on a mission to rendezvous with a small communications satellite. The launch went according to plan, but the mission ended abruptly when the spacecraft collided with the satellite. The...