Some of our regular blog readers might be familiar with a project called “From Earth to the Universe,” or FETTU for short. FETTU was originally cast as a project for the International Year of Astronomy in 2009, but also has grown beyond that single designation. In a nutshell, FETTU puts astronomical images in public spaces like parks, metro stations, and art centers – basically any place you might not expect to run into them.
Lately, we’ve been noticing some great new videos that are covering some basic – yet hard-to-understand – concepts in astronomy. Here’s one we recently saw, featured on “Astronomy Picture of the Day,” that we thought was worth noting: http://apod.nasa.gov/apod/ap110222.html
Star Size Comparisons (Click the image to launch the video at YouTube)
This composite image shows a beautiful X-ray and optical view of Cassiopeia A (Cas A), a supernova remnant located in our Galaxy about 11,000 light years away. These are the remains of a massive star that exploded about 330 years ago, as measured in Earth's time frame. X-rays from Chandra are shown in red, green and blue along with optical data from Hubble in gold.
When I was a kid, my class was given ‘word problems’ for an alternative math lesson. You probably know the kind: two different trains traveling at different speeds, which one gets there first, etc. While these were possibly a little out of the norm, they didn’t quite excite the inner astronomer in me. Now, the folks at "Space Math @ NASA" have put together a comprehensive set of math activities for astrophiles of any age (or at least grades 3 and up).
The 2010 Smithsonian Folklife Festival wrapped up earlier this month on the National Mall in Washington, DC. This year, the Festival included the themes of the Smithsonian’s new Strategic Plan . Of course, Chandra and its role at the Smithsonian Astrophysical Observatory fit squarely into the goals of the “Mysteries of the Universe” theme. Therefore, it was very exciting for us to have a presence during this giant event.
The openFITS project represents a step towards removing some of the mystery surrounding image processing of the X-ray data from the Chandra Observatory. As the Science Imager for Chandra, I'm often asked if astronomical objects appear in optical images as they would if we could somehow fly to these objects and view them with our own eyes. Of course, this is usually asked in relation to optical images, such as those from Hubble, because human eyes cannot actually see X-rays!
Ok, I know this is not an original title for a blog about the sun and certainly not for the new solar cycle. Hey, I am an astronomer, not a writer. Like most science, my work on the Sun is partially something I fell into. My job on the Chandra science team is Monitoring and Trends Scientist. This means that it is my job to watch the spacecraft and make sure nothing is going to go wrong. To be honest, there are a whole bunch of engineers who have the same job for a specific part of the spacecraft and a chief engineer who monitors the whole spacecraft.
Combined data from Chandra (red, green, and blue) as well as optical light (light blue) and hydrogen emission (gold) reveals a “microquasar” in the galaxy NGC 7793. This system contains a stellar-mass black hole that is being fed by a companion star, shown in X-rays in the upper inset. Material falling onto the black hole is blowing outward via two powerful jets that plow into the surrounding gas and heat it. The lower inset shows the nebula that is being illuminated by the output from these jets.
This week, the United States marks the Thanksgiving holiday. For most of us, this means lots of time with family (sometimes too much), friends, and vast amounts of food. It also causes all productivity to cease anywhere close to Thursday and the days that follow. That said, however, science and space never sleep â€“ not even from an overdose of tryptophan.
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