NASA’s great observatories combine to probe deeper in the Universe

Each of NASA’s Great Observatories – Hubble, Spitzer and Chandra – have been designed to peer through the Universe in a characteristic manner. The telescopes have provided along the years massive amount of astronomical data and have helped scientists make important discoveries. What if you combine each of the telescopes’ strong points to assemble one massive probe capable of seeing

The stars of the densest galaxy discovered thus far are 25 times closer than in Milky Way

Using NASA’s Hubble Space Telescope, followed by observations done with NASA’s Chandra X-ray Observatory and ground-based optical telescopes, astronomers have identified what’s considered to be the densest galaxy found so far in the nearby part of the Universe. Classed as an  “ultra-compact dwarf galaxy” and dubbed as M60-UCD1, the density of stars in the galaxy is about 15,000 greater than  that found in Earth’s neighborhood

Why our galaxy’s black hole has a small appetite

As we know by now, most galaxies, including our own, have a supermassive black hole at their center. However, the one in our galaxy, Sagittarius A* (pronounced Sagittarius A-star) has a surprisingly small appetite, something which has puzzled astronomers for years. Sagittarius A* is 4 million times as massive as the sun, but it is devouring much less material than

The Milky Way is surrounded by a huge, hot halo of gas

Recent measurements conducted by NASA’s Chandra X-ray Observatory, and observed by other X-ray instruments from around world and in space, suggest that our galaxy is surrounded by hot spherical gas formation that stretches across 300,000 light years and has an equivalent mass of some 60 billion suns or roughly all the stars in the Milky Way. If these findings are indeed confirmed