In the Hubble image of a galaxy cluster, two bright galaxies resemble eyes, NASA says, "and the misleading smile lines are actually arcs caused by an effect known as strong gravitational lensing."
In 1998, Al Gore proposed using a satellite and the Internet to let us all see the awe-inspiring view of Earth that wows space travelers. That satellite may finally launch later this year.
New data collected from the European Space Agency's Planck telescope shows that the first starlight in the universe occurred about 560 million years after the Big Bang.
NASA's next big space telescope costs $8 billion and is very heavy. New York scientists think they may have found the makings of a cheaper, lighter answer for future space scopes — in a crafts store.
Using a giant pulsed powered machine in New Mexico, researchers have recreated the conditions inside the Sun, and their results help reconcile theoretical models with how the Sun behaves.
Construction is starting in Chile on a new sort of telescope. One aim is to survey huge swaths of sky for faint signals of a "Planet X" that may be lurking on the farthest edges of our solar system.
A Pew Research Center study shows that the two groups disagree most strongly on the safety of GM foods, the use of animals in research, climate change and human evolution.
In celestial terms, asteroid 2004 BL86 buzzed the Earth, coming within 745,000 miles. Scientists were able to get a close look and capture some stunning imagery.
A rare large asteroid zipped very close to Earth Monday morning. NPR's Robert Siegel talks to Paul Chodas, head of the Jet Propulsion Laboratory's Near-Earth Object program, about the "close call."