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ScienceCasts Narrators

The 2017 Total Solar Eclipse Poster
Sun, Sky Watching, Eclipses
Aug 18, 2017
On August 21, 2017, a continent-spanning wave of instruments from home-made pinhole cameras to the most sophisticated telescopes in operation today will be trained on the Eclipse Across America.
ISS
Mar 4, 2015
The key to unraveling the mysterious cause of Alzheimer's disease may not lie in the recesses of the human brain, but rather in the weightless expanses of outer space.
ScienceCasts: Subtracting Gravity from Alzheimer's
Solar System
Feb 27, 2015
Feb 27, 2015:  Cruising through the asteroid belt, NASA Dawn spacecraft is approaching dwarf planet Ceres, and some puzzling features are coming into focus. "We expected to be surprised by Ceres," says Chris Russell, principal investigator of the Dawn mission,... Read More
Solar System
Feb 27, 2015
Feb 27, 2015:  Dwarf planet Ceres continues to puzzle scientists as NASA's Dawn spacecraft gets closer to being captured into orbit around the object. The latest images from Dawn, taken nearly 29,000 miles (46,000 kilometers) from Ceres, reveal that a bright spot that... Read More
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
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.
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
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,... Read More
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... 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-... 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... 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... 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:  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