Careful analysis of a Hubble Space Telescope image indicated that reason for Hale-Bopp's brightness was its exceptionally large size. The nuclei of most comets are about 1-2 miles across.

Now, NASA’s dreaming even bigger. What if it could build a big radio telescope up on the Moon? NASA’s concept to turn a moon crater into a radio telescope using a number of cooperative rovers.

As US astronomers cheer the completion of the state-of-the-art project to rejuvenate the iconic Hale Telescope, one key collaborator is locked out of the celebrations and banned from exporting to ...

The student, named Ma Junhe, dreamed of exploring the moon from a young age. After learning about telescope construction during a physics practical class, he decided to construct his own ...