Sun, Our Sun, Earth’s Space Environment
Jun 27, 2017
Intense solar activity such as sunspots and solar flares subsides during solar minimum, but that doesn’t mean the sun becomes dull. Solar activity simply changes form.
Feb 5, 2015
Feb 5, 2015: Firing off a string of action snapshots like a sports photographer at a NASCAR race, NASA's Hubble Space Telescope captured the rare occurrence of three of Jupiter's largest moons racing across the banded face of the gas-giant planet: Europa, Callisto, and Io.
Jan 27, 2015
Researchers are using a pair of robots to examine the strange way fluids slosh and bubble on the International Space Station
Jan 11, 2015
Jan. 11, 2015: Rivers of glacial meltwater flowing over Greenland's frozen surface may be contributing as much to global sea level rise as all other processes that drain water from the melting ice sheet combined, according to researchers at the University of California, Los Angeles,... Read More
Jan 8, 2015
Jan. 8, 2015: Scientists have paired NASA's Cassini spacecraft with the National Science Foundation's Very Long Baseline Array (VLBA) radio-telescope system to pinpoint the position of Saturn and its family of moons to within about 2 miles (4 kilometers). The measurement is some 50 times... Read More
Jan 7, 2015
Jan. 7, 2015: Although NASA’s Hubble Space Telescope has taken many breathtaking images of the universe, one snapshot stands out from the rest: the iconic view of the so-called “Pillars of Creation.” The jaw-dropping photo, taken in 1995, revealed never-... Read More
Jan 6, 2015
Jan. 6, 2015: Astronomers have observed the largest X-ray flare ever detected from the supermassive black hole at the center of the Milky Way galaxy. This event, detected by NASA’s Chandra X-ray Observatory, raises questions about the behavior of this giant black hole... Read More
Jan 6, 2015
Jan. 6, 2015: How many stars like our sun host planets like our Earth? NASA’s Kepler Space Telescope continuously monitored more than 150,000 stars beyond our solar system, and to date has offered scientists an assortment of more than 4,000 candidate planets for further... Read More
Jan 5, 2015
Jan. 5, 2015: The largest NASA Hubble Space Telescope image ever assembled, this sweeping bird’s-eye view of a portion of the Andromeda galaxy (M31) is the sharpest large composite image ever taken of our galactic next-door neighbor.
Dec 31, 2014
Dec 31, 2014: It's active. It's passive. And it's got a big, spinning lasso. Scheduled for launch on Jan. 29, 2015, NASA's Soil Moisture Active Passive (SMAP) instrument will measure the moisture lodged in Earth's soils with an unprecedented accuracy and resolution. The instrument's three... Read More
Dec 31, 2014
Dec 31, 2014: Each day, thunderstorms around the world produce about a thousand quick bursts of gamma rays, some of the highest-energy light naturally found on Earth. By merging records of events seen by NASA's Fermi Gamma-ray Space Telescope with data from ground-based radar and... Read More
Dec 31, 2014
Dec 31, 2014: A new NASA-led study shows that tropical forests may be absorbing far more carbon dioxide than many scientists thought, in response to rising atmospheric levels of the greenhouse gas. The study estimates that tropical forests absorb 1.4 billion metric tons of carbon dioxide out... Read More
Dec 30, 2014
Dec 30, 2014: NASA's Dawn spacecraft has entered an approach phase in which it will continue to close in on Ceres, a Texas-sized dwarf planet never before visited by a spacecraft. Dawn launched in 2007 and is scheduled to enter Ceres orbit in March 2015.
Dec 29, 2014
Dec 29, 2014: For the first time, a mission designed to set its eyes on black holes and other objects far from our solar system has turned its gaze back closer to home, capturing images of our sun. NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, has taken its first picture of the... Read More
Sun, Solar System
Dec 22, 2014
Dec 22, 2014: According to the calendar, Christmas comes on Thursday, Dec. 25th. For backyard sky watchers, however, the holiday starts earlier. They're getting planets for Christmas—and the show begins on Dec. 22nd.