Hubble Hones In on a Hypergiants Home : The super star cluster Westerlund 1, only 15,000 light-years away in our Milky Way neighborhood, hosts one of the largest stars ever discovered.
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Comet 67P/C-G is framed by one of Rosetta’s solar wings, which is 46 feet long. A stream of gas and dust extends from an active area of the comet’s neck, about 10 miles away. (via NY Times)
Mercury in enhanced color, imaged by MESSENGER
Credit: NASA / JPL
Last space shuttle External Tank arrives at California Science Center.
ET-94 paraded its way through the Los Angeles suburbs today, May 21, as it journeyed to its final home at the California Science Center.
The last surviving flight-worthy space shuttle external tank, ET-94 left the Michoud Assembly Facility in New Orleans April 12, where it has been since it was fabricated in the early 2000′s. It traversed the Panama Canal April 25-27, and arrived at Marina Del Rey in Los Angeles last Wednesday, May 19, after a 36-day sea voyage.
Leaving Marina Del Rey at 12:01am PDT with a New Orleans jazz band, the tank encountered more obstacles than expected during its 15.5 mile trek through the city, arriving at the CSC at 7:13pm PDT.
Towed through the streets of Inglewood, the last time space hardware shut down traffic was in October 2012, when space shuttle Endeavour was towed from Los Angeles International Airport to the CSC.
P/c: LA Times, California Science Center.
On March 4 the first quarter moon passes between Earth and the star Aldebaran, temporarily blocking our view of the star. This is called an occultation.
The occultation begins and concludes at different times, depending on where you are when you view it.
The event should be easy to see from most of the U.S., Mexico, most of Central America, the Western Caribbean and Bermuda.
Observers along a narrow path from Vancouver, British Columbia, to Hartford, Connecticut, will see the moon “graze” the star. The star will disappear and reappear repeatedly as hills and valleys on the moon alternately obscure and reveal it.
As seen from Earth, both Mercury and Venus have phases like our moon. That’s because they circle the sun inside Earth’s orbit.
Planets that orbit between Earth and the sun are known as inner or inferior planets.
Inferior planets can never be at “opposition,” which is when the planet and the sun are on opposite sides of Earth.
But inferior planets can be at “conjunction,” which is when a planet, the sun and Earth are all in a straight line.
Conjunction can happen once when the planet is on the opposite side of the sun from Earth and again when it’s on the same side of the sun as Earth.
When a planet is on the opposite side of the sun from Earth, we say it is at “superior conjunction.” As the planet moves out from behind the sun and gets closer to Earth, we see less and less of the lit side. We see phases, similar to our moon’s phases.
Mercury is at superior conjunction on March 6.
A few weeks later, the planet emerges from behind the sun and we can once again observe it. By the end of March we’ll see a last-quarter Mercury.
On April 20 Mercury reaches “inferior conjunction.”
Brilliant Venus is also racing toward its own inferior conjunction on March 25. Watch its crescent get thinner and thinner as the planet’s size appears larger and larger, because it is getting closer to Earth.
Finally, look for Jupiter to rise in the East. It will be visible all month long from late evening until dawn.
You can catch up on solar system missions and all of our missions at www.nasa.gov
Watch the full “What’s Up for March 2017″ video here:
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For more on the Fermi Paradox and why alien life hasn’t found us yet. (Infographic via futurism)
Ground those antennas kids, winter’s got more than the white stuff today for us!
The Clansman PRC-320 - Plessey RT-320 Military Manpack Transciever [HD] - M0VST (by markbeermonster)
Great collection of astronomical articles and pictures