NHA Blog - Learn About Outer Space
See Our 30 Doradus Outer Space Posters:
The star-forming region, 30 Doradus, is one of the largest located close to the Milky Way and is found in the neighboring galaxy, Large Magellanic Cloud. About 2,400 massive stars in the center of 30 Doradus, also known as the Tarantula Nebula, are producing intense radiation and powerful winds as they blow off material.
Multimillion-degree gas detected in X-rays (blue) by the Chandra X-ray Observatory comes from shock fronts - similar to sonic booms -formed by these stellar winds and by supernova explosions. This hot gas carves out gigantic bubbles in the surrounding cooler gas and dust shown here in infrared emission from the Spitzer Space Telescope (orange).
The Andromeda Galaxy is our nearest Spiral Galaxy. Also known as Messier 31 or simply M31 this galaxy is on a collision course with our own Milky Way Galaxy. Fortunately at approximately 2.5 million light-years away we will not have to worry about this collision which is estimated to occur more than 3 billion years from now. The Andromeda Galaxy's bright core is the only part of the galaxy that is visible with the naked eye at night. If you could see the entire Galaxy at night such as with a powerful enough telescope, it would span across the sky 6 times the distance that of the moon! The total mass of the Andromeda Galaxy is believed to be approximately the same as our own Milky Way Galaxy. The Andromeda Galaxy is only 1 of approximately 30 other galaxies within the Local Group. See our Andromeda Galaxy posters using the following links:
- NASA Andromeda Galaxy
- Milky Way Andromeda Galaxy Collision
- Fiery Andromeda
- Andromeda M31 Neighbor Galaxy
- Warped Andromeda by WISE
- Andromeda Optical