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America's Debut in Space Poster
Universe, Earth, Sun, Solar System
Jan 30, 2018
On January 31, 1958, the United States joined the "space race" with the successful launch of the Explorer 1 satellite, marking the birth of space science.
Dec 2, 2014
Arctic and Antarctic sea ice are both affected by climate change, but the two poles of Earth are behaving in intriguingly different ways.
ScienceCasts: Climate Change and the Yin-Yang of Polar Sea Ice
Earth, Solar System
Nov 28, 2014
Nov 28, 2014: The ruddy color of Jupiter's Great Red Spot is likely a product of simple chemicals being broken apart by sunlight in the planet's upper atmosphere, according to a new analysis of data from NASA's Cassini mission. The results contradict the other leading theory for... Read More
Earth, Sun
Nov 27, 2014
Nov 27, 2014: Two donuts of seething radiation that surround Earth, called the Van Allen radiation belts, have been found to contain a nearly impenetrable barrier that prevents the fastest, most energetic electrons from reaching Earth.
Earth, Sun
Nov 24, 2014
Nov 24, 2014: Thanksgiving is the biggest travel holiday of the year in the United States. Millions of people board airplanes and fly long hours to visit friends and family. Dreading the trip? Think of it as a sky watching opportunity. There are some things you can... Read More
Solar System
Nov 24, 2014
The Moon might not be as dead as it looks. Researchers using NASA's Lunar Reconnaissance Orbiter have found signs of geologically-recent volcanic eruptions on Earth's natural satellite.
ScienceCasts: Young Volcanoes on the Moon
Solar System
Nov 24, 2014
Nov 24, 2014: Back in 1971, Apollo 15 astronauts orbiting the Moon photographed something very odd.  Researchers called it "Ina," and it looked like the aftermath of a volcanic eruption. 
Nov 21, 2014
Nov 21, 2014: A 3D image shows what it would look like to fly over the surface of comet 67P/Churyumov-Gerasimenko. The image was generated from data collected by the Rosetta Lander Imaging System (ROLIS) aboard the European Space Agency’s Philae spacecraft during the descent to the spacecraft’s... Read More
Universe, Solar System
Nov 18, 2014
Nov 18, 2014: Born from the rubble of a violent collision, hurled through space for millions of years and dismembered by the gravity of planets, asteroid Bennu had a tough life in a rough neighborhood: the early solar system. "Bennu's Journey," a new animation... Read More
Nov 18, 2014
Nov 18, 2014: Images taken by the Rosetta spacecraft's OSIRIS imaging system show the portions of the journey its Philae comet lander undertook on Nov. 12, as it approached and then rebounded off the surface of comet 67P/Churyumov-Gerasimenko.
Universe, Solar System
Nov 17, 2014
November 17, 2014: Images from NASA's Dawn Mission have been used to create a series of high-resolution geological maps of the large asteroid Vesta, revealing the variety of surface features in unprecedented detail. These maps are included with a series of 11 scientific papers... Read More
Nov 16, 2014
Nov 16, 2014: A map released by NASA's Near Earth Object (NEO) Program reveals that small asteroids frequently enter and disintegrate in the Earth's atmosphere with random distribution around the globe. Released to the scientific community, the map visualizes data gathered by U.... Read More
Universe, Sun
Nov 6, 2014
Nov 6, 2014: A NASA sounding rocket experiment has detected a surprising surplus of infrared light in the dark space between galaxies, a diffuse cosmic glow as bright as all known galaxies combined. The glow is thought to be from orphaned stars flung out of galaxies... Read More
Solar System
Nov 3, 2014
Nov 3, 2014: Generally speaking, space missions fall into one of three categories:  difficult, more difficult, and ridiculously difficult. Flybys are difficult.  A spaceship travels hundreds of millions of miles through the dark void of space, pinpoints a... Read More
Solar System
Nov 3, 2014
The European Space Agency's Rosetta spacecraft is about to attempt something "ridiculously difficult" - landing a probe on the surface of a speeding comet.
ScienceCasts: How to Land on a Comet