Jul 25 Scientists Discover What Makes the Northern Lights Dance By PBS News Hour Scientists and stargazers alike have long been fascinated by the auroras, also known as the northern and southern lights -- the bands of light that stretch and sometimes dance across the night sky near the earth's poles. Continue reading
Jul 10 Lunar Water Signs Found in Apollo Mission Rocks By PBS News Hour A new analysis of moon pebbles collected decades ago has found that the small stones contained traces of water, according to a report Thursday in the journal Nature by Brown University geologist Alberto Saal and his colleagues. Continue reading
Jun 20 Watch NASA Lander Discovers Evidence of Ice on Mars NASA's Phoenix Mars Lander found evidence of water-based ice on Mars, confirming some scientists' theories. Scientist Peter Smith of the University of Arizona discusses the discovery. Continue watching
May 26 Watch NASA’s Phoenix Sends Intriguing Images From Mars NASA's Phoenix Mars lander touched down Sunday and began transmitting pictures from the northern arctic plains of Mars where scientists hope to find evidence of water and life-sustaining conditions. Mission co-leader Ray Arvidson explains. Continue watching
May 26 NASA’s Mars Spacecraft Lands, Transmits Photos of Arctic Terrain By PBS News Hour After a 10-month, 422-million-mile voyage, NASA's Phoenix Mars lander touched down Sunday and began transmitting pictures from the arctic plains of the Red Planet where scientists hope to find evidence of water and life-sustaining conditions. Continue reading
May 23 NASA’s Phoenix Spacecraft Lands on Mars By PBS News Hour A spacecraft designed to search for life on Mars completed its nearly 10-month, 422-million-mile voyage Sunday, touching down the Red Planet and transmitting intriguing images from its northern arctic plains. Continue reading
Apr 01 Scientists Plot Pollutants’ Path at the Arctic By PBS News Hour The Arctic is a receptacle of the planet's air pollutants -- from forest fires to human-produced carbon dioxide emissions -- and a coordinated international effort is geared toward learning more about pollutants' effects at the top of the globe. Continue reading
Mar 04 NASA Orbiter Reveals Avalanches on Mars By PBS News Hour A NASA spacecraft orbiting Mars has sent back the first-ever images of avalanches on the red planet, NASA announced Monday. Continue reading
Nov 07 Watch Astronomers Spy New Planet in Distant Solar System Scientists announced Tuesday that they had discovered a new planet orbiting the star 55 Cancri, 41 light years from Earth, making it the most crowded solar system identified outside of our own. Astronomer Geoff Marcy talks about the new planet… Continue watching
Oct 03 Watch Fifty Years Ago, Sputnik Launched Space Age Fifty years ago this week, the Soviet Union launched Sputnik, the first man-made satellite, into space. On the anniversary of the turning point in space exploration, a NASA historian and a science reporter assess the impact and legacy of the… Continue watching