Solar System, Sky Watching
Aug 10, 2015
This week, Earth passes through a stream of debris from Comet Swift-Tuttle, source of the annual Perseid meteor shower. Forecasters say the show could be especially good this year because the Moon is nearly new when the shower peaks on Aug. 12-13.
Jul 24, 2015
The second full Moon of July is just around the corner. According to modern folklore, it is a "Blue Moon."
Jul 21, 2015
Predicting floods is notoriously tricky. Sponsored by NASA, a new computer tool known as the "Global Flood Monitoring System" is improving forecasts.
Jul 10, 2015
Advances in the understanding of how fluids behave in low gravity is key to spacecraft operations. A long-awaited spin-off is an excellent cup of coffee in space.
Jun 25, 2015
With support from NASA, the EPA has developed an app to track algae that can threaten fresh water supplies.
Solar System, Planets of Our Solar System, Sky Watching
Jun 8, 2015
Venus and Jupiter are converging for a must-see close encounter at the end of June. It could be the best backyard sky show of 2015.
May 26, 2015
As the Hubble Space Telescope celebrates its 25th anniversary, scientists are reflecting on the key role astronauts played in allowing the telescope to continue making great discoveries.
May 22, 2015
The common roundworm shares a surprising amount of genetic material with humans - enough, in fact, to make them the good substitutes for astronauts in low-gravity medical studies.
May 14, 2015
On Earth, a fast runner takes a few hours to complete a marathon. On Mars, it's taken 11 years. NASA's Opportunity rover crossed that finish line in 2015.
May 11, 2015
May 11, 2015: One day, when humans go to Mars, they might find that, occasionally, the Red Planet has green skies. In late Dec. 2014, NASA's MAVEN spacecraft detected evidence of widespread auroras in Mars's northern hemisphere. The "Christmas Lights," as researchers... Read More
Universe, Sun, Solar System
May 5, 2015
May 5, 2015: As May of 2015 unfolds, Halley's Comet is more than 5 billion kilometers from Earth, receding into the inky blackness of the outer solar system, where its looping orbit takes it every 76 years. Dim and distant, history's most famous comet won't be back until sometime... Read More
Universe, Earth, Solar System
Apr 30, 2015
April 30, 2015: The planet closest to the Sun is, ironically, one of the coldest. That’s just one of many mind-bending discoveries about Mercury that NASA’s MESSENGER spacecraft beamed back to Earth over the past 7 years. Earlier today, the mission ended with a crash as spectacular as... Read More
Apr 28, 2015
The Amazon rainforest and the Sahara desert seem utterly different. Yet NASA satellites have discovered a surprising connection that intimately links these two disparate parts of our planet.
Apr 21, 2015
April 21, 2015: When NASA's New Horizons spacecraft flies by Pluto this July, the spacecraft's high-resolution cameras will spot many new landforms on the dwarf planet's unexplored surface. There could be mountains, craters, rilles, valleys and, of course, the unknown. They are... Read More