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Latest Activity: 9 hours ago
Cosmology - Astrophysics - Astronomy
Hubble Wallpaper - Awesome Hubble Images
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Quick Note For The Weekend
Ask Ethan: Could The Fabric Of Spacetime Be Defective? (Synopsis)
Eight other worlds in our solar system might have life beyond Earth (Synopsis)
‘Game Of Thrones’ Home World Could Actually Exist, Says Science (Synopsis)
Did a ‘big whack’ create all of Pluto’s moons? (Synopsis)
Unfortunately, we don't go out camping any more.
1. During International Dark Sky Week, get together with friends and family and go outside at night. A lot of us don’t take the opportunity to experience the nighttime environment. Go outside, look up and look around. Lots of interesting stuff is happening during the night hours. Go explore! Better yet, visit one of our International Dark Sky Places!
2. Help spread the word about light pollution and the importance of dark skies. This week is a great excuse to talk with friends, family, neighbors, your homeowner’s association or government representatives about why protecting our night environment is so crucial. We have Dark Sky Week resources to help start the conversation.
3. Become a citizen scientist and collect data about the night sky in your neighborhood for Globe at Night. It’s fun, easy and you’ll be helping scientists across the globe better understand the threat of light pollution to our planet. The April campaign has already started, so check it our now.
4. Get this one-of-a-kind Dark Sky Week 2017 t-shirt. You’ll be helping to support the International Dark-Sky Association in its work protecting night skies and promoting the cause, all at the same time. It’s a great conversation starter. Available in women’s, tank and hoodie styles, too.
5. Stopping light pollution isn’t just about seeing the stars. There are other important things at stake, too. Use this week to take the time to learn more about the effect of artificial light at night on human health, the environment, energy waste, crime and safety and our heritage of night skies.
What a great pic!!!
A New Angle on Two Spiral Galaxies for Hubble’s 27th Birthday
NASA Radar Spots Relatively Large Asteroid Prior to Flyby
Radar images of asteroid 2014 JO25 were obtained in the early morning hours on Tuesday, with NASA's 70-meter (230-foot) antenna at the Goldstone Deep Space Communications Complex in California. The images reveal a peanut-shaped asteroid that rotates about once every five hours. The images have resolutions as fine as 25 feet (7.5 meters) per pixel.
Asteroid 2014 JO25 was discovered in May 2014 by astronomers at the Catalina Sky Survey near Tucson, Arizona -- a project of NASA's Near-Earth Objects Observations Program in collaboration with the University of Arizona. The asteroid will fly safely past Earth on Wednesday at a distance of about 1.1 million miles (1.8 million kilometers), or about 4.6 times the distance from Earth to the moon. The encounter is the closest the object will have come to Earth in 400 years and will be its closest approach for at least the next 500 years.
“The asteroid has a contact binary structure – two lobes connected by a neck-like region,” said Shantanu Naidu, a scientist from NASA's Jet Propulsion Laboratory in Pasadena, California, who led the Goldstone observations. “The images show flat facets, concavities and angular topography.”
The largest of the asteroid’s two lobes is estimated to be 2,000 feet (620 meters) across. Radar observations of the asteroid also have been conducted at the National Science Foundation's Arecibo Observatory in Puerto Rico. Additional radar observations are being conducted at both Goldstone and Arecibo on April 19 20, and 21, and could provide images with even higher resolution.
Radar has been used to observe hundreds of asteroids. When these small, natural remnants of the formation of the solar system pass relatively close to Earth, deep space radar is a powerful technique for studying
their sizes, shapes, rotation, surface features, and roughness, and for more precise determination of their orbital path.
NASA's Jet Propulsion Laboratory, Pasadena, California, manages and operates NASA's Deep Space Network, including the Goldstone Solar System Radar, and hosts the Center for Near-Earth Object Studies for NASA's Near-Earth Object Observations Program within the agency's Science Mission Directorate.
More information about asteroids and near-Earth objects can be found at:
Hmmmm......I need me a 60 inch screen............
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