Comet Storm in a Nearby Star System | Science Mission Directorate
Disclaimer: This page is kept for historical purposes, but the content is no longer actively updated. For more on NASA Science, visit https://science.nasa.gov. Oct. 19, 2011: NASA's Spitzer Space Telescope has detected signs of icy bodies raining down in an alien solar system. The downpour resembles our own solar system several billion years ago during a period known as the "Late Heavy Bombardment
Dark Fireworks on the Sun | Science Mission Directorate
July 11, 2011: On June 7, 2011, Earth-orbiting satellites detected a flash of X-rays coming from the western edge of the solar disk. Registering only "M" (for medium) on the Richter scale of solar flares, the blast at first appeared to be a run-of-the-mill eruption--that is, until researchers looked at the movies. "We'd never seen anything like it," says Alex Young, a solar physicist at the Goddar
A Rare Eclipse of the Midnight Sun | Science Mission Directorate
May 31, 2011: It sounds like an oxymoron: a solar eclipse at midnight. According to NASA, it's about to happen. "It might sound like a contradiction to have a solar eclipse in the middle of the night, but this is what we will see in northern Norway, Sweden and Finland on June 1st," says Knut Joergen Roed Oedegaard, an astrophysicist at the Norwegian Centre for Science Education in Oslo. A previous
What is a Solar Flare? - NASA Science
Solar flares are giant explosions on the sun that send energy, light and high speed particles into space. These flares are often associated with solar magnetic storms known as coronal mass ejections (CMEs). The number of solar flares increases approximately every 11 years, and the sun is currently moving towards another solar maximum, likely in 2013. That means more flares will be coming, some sma
The Sun Steals Comets from Other Stars | Science Mission Directorate
Nov. 23, 2010: The next time you thrill at the sight of a comet blazing across the night sky, consider this: it's a stolen pleasure. You're enjoying the spectacle at the expense of a distant star. Sophisticated computer simulations run by researchers at the Southwest Research Institute (SWRI) have exposed the crime. "If the results are right, our Sun snatched comets from neighboring stars' back y
Japanese Spacecraft Approaches Venus | Science Mission Directorate
August 16, 2010: For the next few months, Venus will be softly resplendent in the evening sky, a treat for stargazers – but looks can be deceiving. Consider this: The Venusian surface is hot enough to melt lead. The planet's 96% carbon dioxide atmosphere is thick and steamy with a corrosive mist of sulfuric acid floating through it. The terrain is forbidding, strewn with craters and volcanic cald
A Puzzling Collapse of Earth's Upper Atmosphere | Science Mission Directorate
July 15, 2010: NASA-funded researchers are monitoring a big event in our planet's atmosphere. High above Earth's surface where the atmosphere meets space, a rarefied layer of gas called "the thermosphere" recently collapsed and now is rebounding again. "This is the biggest contraction of the thermosphere in at least 43 years," says John Emmert of the Naval Research Lab, lead author of a paper ann
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Kepler Discovers a Planet with Two Suns | Science Mission Directorate
NASA Plans to Visit a Near-Earth Asteroid | Science Mission Directorate
Hubble Discovers a New Moon Around Pluto | Science Mission Directorate
Dawn Orbits Giant Asteroid Vesta | Science Mission Directorate
Sickening Solar Flares | Science Mission Directorate
First Ever STEREO Images of the Entire Sun | Science Mission Directorate
Global Eruption Rocks the Sun | Science Mission Directorate
The International Space Weather Initiative | Science Mission Directorate
Youngest-Ever Nearby Black Hole Discovered | Science Mission Directorate
Earth's Dust Tail Points to Alien Planets | Science Mission Directorate
Dead Spacecraft Walking | Science Mission Directorate
Kepler Discovers Multiple Planets Transiting a Single Star | Science Mission Directorate
Rosetta Discovers Haunting Beauty in Deep Space | Science Mission Directorate