Radio Astronomy in the News
New ALMA observations push back the epoch of massive-galaxy formation even further by identifying two giant galaxies seen when the universe was only 780 million years old, or about 5 percent its current age.
ALMA discovers remarkably early signs of low-mass star formation near the supermassive black hole at the center the Milky Way.
Atacama Large Millimeter/submillimeter Array
The Atacama Large Millimeter/submillimeter Array in the Atacama Desert, Chile, is the most complex observatory ever built.
Image of the Week:
The Center of Our GalaxyThe Very Large Array (VLA) was used to make the largest and most sensitive radio image of the Milky Way Galaxy's center. The bright diagonal features trace our Galaxy’s disk-like shape viewed edge-on. The brightest source is called Sagittarius A. (The Galaxy's center lies toward the constellation Sagittarius, or Sgr.) Deep within Sgr A is Sgr A*, a black hole with a mass millions of times that of the Sun. Hot young stars heat the gas around them in bright, round blobs. Massive supernovae explosions leave bubble-shaped remnants. Spiraling or synchrotron radiation makes a collection of strange, thread-like structures. Their emission, orientation, and structure provide important clues about the energetics and large-scale magnetic field structure.
Color different parts of the electromagnetic spectrum using multiwavelength images from space. Create your own background for your favorite device.
Check out our Milky Way Explorer, a guided trip through our spiral Galaxy and its neighborhood. You choose where to explore, and a radio astronomer talks to you about each stop.