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Solar Minimum is Coming Poster
Sun, Our Sun, Earth’s Space Environment
Jun 27, 2017
Intense solar activity such as sunspots and solar flares subsides during solar minimum, but that doesn’t mean the sun becomes dull. Solar activity simply changes form.
Solar System
Jan 13, 2014
Eight years after it left Earth, NASA's New Horizons spacecraft is approaching Pluto. The encounter begins less than a year from now.
ScienceCasts: Countdown to Pluto
Jan 10, 2014
Earth
Jan 10, 2014
Jan. 10, 2014:  When firefighters want to extinguish a blaze, they often douse it with water. Astronauts on board the ISS, however, are experimenting with a form of water that does the opposite.  Instead of stopping fire, this water helps start it. "We... Read More
Earth
Jan 8, 2014
Jan. 8, 2014:  A new NASA satellite that will peer into the topmost layer of Earth's soils to measure the hidden waters that influence our weather and climate is in final preparations for a Jan. 29 dawn launch from California.
ISS
Jan 3, 2014
Astronauts on the ISS are experimenting with a form of water that has a strange property: it can help start fire. This fundamental physics investigation could have down-to-Earth benefits such as clean-burning municipal waste disposal and improved saltwater purification.
ScienceCasts: Starting Fire in Water
Earth, Sun
Dec 23, 2013
Dec. 23, 2013:  Data from NASA's AIM spacecraft show that noctilucent clouds are like a great "geophysical light bulb." They turn on every year in late spring, reaching almost full intensity over a period of no more than 5 to 10 days. News flash: The bulb is... Read More
Sun
Dec 19, 2013
A vast bank of electric-blue clouds has appeared over Antarctica, signaling the start of the season for southern hemisphere noctilucent clouds.
ScienceCasts: Electric-Blue Clouds Appear Over Antarctica
Sun, Solar System
Dec 13, 2013
Dec. 13, 2013:  As arctic air and record cold sweeps across the USA, amateur astronomers are looking at their calendars with a degree of trepidation. A date is circled: Dec. 14th. And below it says: "Wake up at 4 AM for the Geminid meteor shower." "It's going... Read More
Solar System
Dec 12, 2013
The Geminid meteor shower is underway. Forecasters say the best time to look is during the dark hours before sunrise on Saturday morning, Dec. 14th. Dark-sky observers could see dozens of bright shooting stars.
ScienceCasts: Geminid Meteors at Dawn
Earth
Dec 10, 2013
Dec. 10, 2013:  What is the coldest place on Earth? It is a high ridge in Antarctica on the East Antarctic Plateau where temperatures in several hollows can dip below minus 133.6 degrees Fahrenheit (minus 92 degrees Celsius) on a clear winter night.
Universe, Sun
Dec 4, 2013
Dec. 4, 2013:  Astronomers have long known that some comets like it hot.  Several of the greatest comets in history have flown close to the sun, puffing themselves up with solar heat, before they became naked-eye wonders in the night sky. Some comets like... Read More
Nov 27, 2013
Nov. 27, 2013:  If you have a smartphone, take it out and run your fingers along the glass surface.  It's cool to the touch, incredibly thin and strong, and almost impervious to scratching.  You're now in contact with a "smart material."
Sun, Solar System
Nov 27, 2013
Nov. 27, 2013: Astronomers have long been puzzled by a certain meteor shower. Every year in mid-December the sky fills with flashes of light shooting out of the constellation Gemini.  The Geminids are fast, bright, and reliable.  They never fail to show up... Read More