Giant Magellan Telescope organization casts fifth mirror

The Giant Magellan Telescope Organization (GMTO) announced that it has initiated the casting of the fifth of seven mirrors that will form the heart of the Giant Magellan Telescope (GMT). The mirror is being cast at the University ...

Astronomers discover sunscreen snow falling on hot exoplanet

Astronomers at Penn State have used the Hubble Space Telescope to find a blistering-hot giant planet outside our solar system where the atmosphere "snows" titanium oxide. These Hubble observations are the first detections ...

Giant exoplanet hunters: Look for debris disks

There's no map showing all the billions of exoplanets hiding in our galaxy—they're so distant and faint compared to their stars, it's hard to find them. Now, astronomers hunting for new worlds have established a possible ...

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