Add Yahoo as a preferred source to see more of our stories on Google. An image of the Cepheid variable star RS Puppis. An image of the Cepheid variable star RS Puppis. The most accurate observation to ...

Spring is galaxy season. If you have a small telescope, this is a good time of year to get it out to find galaxies in the sky. Because most will appear as dim fuzzy blobs, a detailed star chart is ...

Taking advantage of the very high spatial resolution provided by the Very Large Telescope Interferometer, a team of French and Swiss astronomers [1] has measured directly the change in angular ...

Trying to measure the size of the universe is no easy task. We know that the universe is expanding, though the exact rate of this expansion is not yet fixed. So one method that astronomers use to tell ...

The size and age of our Universe is not only a critically important issue in cosmology, but is also among the most controversial and delicate of the cosmological questions. Infrared observations made ...