This is an image of Comet Lovejoy as it moves ever closer toward the sun taken on December 15, 2011 at 4:30 AM ET. This image is what's known as a "coronograph" in which the camera -- the Large Angle ...
Hubble observations pinpoint planet PDS 70b. A coronagraph on Hubble's camera blocks out the glare of the central star for the planet to be directly observed. Though over 4,000 exoplanets have been ...