Jan 22 Watch 6:43 We can’t see this possible 9th planet, but we feel its presence By PBS News Hour Most of us grew up thinking there were nine planets in the solar system, but that changed when Pluto got downgraded in 2006. Now there's news that there might be a ninth planet after all. Researchers have found evidence of… Continue watching
Nov 03 4K NASA video lets you see the sun in a new light By Justin Scuiletti NASA is allowing you to engage in an extended gazing session at our planet's star this week with the release of a new video that reveals the sun -- rotation, solar flares and all -- in unprecedented detail. The… Continue reading
Aug 06 Watch How Rosetta can help decipher a comet’s secrets By PBS News Hour After a 10-year journey, the space probe Rosetta is orbiting a comet. The spacecraft is slated to follow the comet for more than a year on its way toward the sun. Hari Sreenivasan talks to Mark McCaughrean, senior scientific advisor… Continue watching
Aug 06 Rosetta spacecraft’s first images of comet By Larisa Epatko After a 10-year, 4-billion-mile journey, the European Space Agency’s Rosetta space probe reached its final destination on Wednesday: comet 67P/Churyumov-Gerasimenko. Continue reading
Nov 29 Watch Cassini spacecraft’s cosmic photos bring the world ‘along for the ride’ Cassini spacecraft's cosmic photos bring the world 'along for the ride'… Continue watching
Jun 04 Watch Venus Transit: Explaining a Rare Phenomenon Venus Transit: Explaining a Rare Phenomenon… Continue watching
Mar 16 Watch First Rock From the Sun: NASA Set to Explore Mercury’s Extreme Atmosphere Imagine traveling to a planet where the sun is 11 times stronger than on Earth, the temperature can swing 1,100 degrees and you have to maintain contact with headquarters back on Earth. Science correspondent Miles O'Brien reports on NASA's tricky… Continue watching
Feb 03 Watch My Very Educated Mother Just Showed Us New Planets — 1,200 of Them Perhaps you learned a mnemonic device such as the one above to help remember the planets -- Mercury, Venus, Earth, etc. -- and their order away from the sun. Turns out, we're going to need a longer mnemonic after the… Continue watching
Nov 14 Astronomers Capture First Images of Distant Planets By PBS News Hour Two teams of astronomers have for the first time captured direct images of planets orbiting faraway stars. Continue reading
Jan 31 Watch Astronomers Debate Pluto’s Planetary Status Members of the International Astronomical Union voted in August to reclassify Pluto as a "dwarf planet." Many astronomers, however, are unhappy with the demotion -- they question its scientific validity and the way the decision was made. Continue watching