- Fifteen Years of NASA's Chandra X-ray Observatory
This Chandra X-ray Observatory image of the Hydra A galaxy cluster was taken on Oct. 30, 1999, with the Advanced CCD Imaging Spectrometer (ACIS) in an observation that lasted about six hours. Hydra A is a galaxy cluster that is 840 million light years from Earth. The cluster gets its name from the strong radio source, Hydra A, that originates in a galaxy near the center of the cluster. Optical observations show a few hundred galaxies in the cluster. Chandra X-ray observations reveal a large cloud of hot gas that extends throughout the cluster. The gas cloud is several million light years across and has a temperature of about 40 million degrees in the outer parts decreasing to about 35 million degrees in the inner region. NASA's Chandra X-ray Observatory was launched into space fifteen years ago aboard the Space Shuttle Columbia. Since its deployment on July 23, 1999, Chandra has helped revolutionize our understanding of the universe through its unrivaled X-ray vision. Chandra, one of NASA's current "Great Observatories," along with the Hubble Space Telescope and Spitzer Space Telescope, is specially designed to detect X-ray emission from hot and energetic regions of the universe. Image Credit: NASA/CXC/SAO
Category Archives: Marines
31 years ago today, we woke up to the fact that over 200 of my fellow Marines were killed by a truck bomb. A truck bomb…now we have the “fancy” term Vehicle Borne Improvised Explosive Device (VBIED). In accordance with … Continue reading
30 years ago today, we woke up to the fact that over 200 of my fellow Marines were killed by a truck bomb. A truck bomb…now we have the “fancy” term Vehicle Borne Improvised Explosive Device (VBIED). In accordance with … Continue reading
Go visit the Gunny at Sempertoons for more.
On this day 237 years ago our Corps became a reality. The first Marines were recruited, and signed their papers on this day in 1775. In a small tavern in Philadelphia the United States Marine Corps was born. Today we celebrate that … Continue reading
Beirut . It was the bloodiest day in the Corps’ history since World War II, when Marines fought to secure Iwo Jima. On October 23 1983, around 6:20 am, a yellow Mercedes-Benz truck drove to Beirut International Airport, where the … Continue reading
Rarely do I delve into the “meme” of “Someone You Should Know”. However, recent events have drawn me to three individuals that need to be singled out for doing their jobs, and paying the ultimate price for doing them well. … Continue reading
A look inside the Martial Arts Center of Excellence in Quantico. I may have posted this previously but, I like it. Part 1: Part 2: Part 3:
As noted I spent the last 3 days in the DC area. Yes there was storm damage. Yes we had to scramble on arrangements for our meetings, lodging, etc. Not a big deal. I travel a lot. One thing that … Continue reading
I think it’s past time to get back to a Marine Monday.