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ScienceCasts: Milestones in Review Poster Image
Jan 24, 2017
We’re over 230 episodes in! Which were your favorites? From our home planet to discovering new worlds, find out:
Earth, Sun, Solar System
Feb 6, 2015
Feb 6, 2015: Every 13 months, Earth and Jupiter have a close encounter.  Astronomers call it an "opposition" because Jupiter is opposite the Sun in the sky. Our solar system’s largest gas planet rises in the east at sunset, and soars overhead at midnight, shining brighter than any star in the... Read More
Earth
Feb 5, 2015
NASA has launched SMAP, a new satellite to study water, not in oceans or lakes but in the soil beneath our feet. This often overlooked repository of water can have big effects on weather, climate, drought and agriculture.
ScienceCasts: Mud Matters
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.
ISS
Jan 27, 2015
Researchers are using a pair of robots to examine the strange way fluids slosh and bubble on the International Space Station
ScienceCasts: The Strange Way Fluids Slosh on the International Space Station
Earth
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, and NASA.
Solar System
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 more... Read More
Universe
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-before-seen details of three giant... Read More
Universe
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 study -- the 1,000th... Read More
Universe
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 and its surrounding... Read More
Universe
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.
Earth
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 main... Read More
Sun
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 lightning... Read More
Earth
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 of a... 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.