The Hubble Space Telescope provides a bird’s eye view of a barred spiral galaxy in the southern constellation Sculptor that could serve as a textbook example of the most common type of spiral.
Despite careful searches with the Hubble and Chandra space telescopes, astronomers have been unable to find a presumed supermassive black hole at the heart of a giant galaxy.
Astronomers using the Hubble Space Telescope trace a supernova’s history by measuring how fast left over debris is moving, concluding light from the blast reached Earth during the decline of the Roman Empire 1,700 years ago.
By measuring subtle changes in the timing of millisecond pulsar flashes, researchers are close to confirming the presence of a background “sea” of gravity waves.