A new study provides new estimates on how often stars near the center of our galaxy experience "close encounters," which could have serious implications for habitability studies.

Recent research supported by NASA shows how algae-growing greenhouses could lead to colonies on the Moon and Mars that are largely self-sufficient

Our measurements of dark energy give contradictory results. A new study confirms dark energy, but suggests it is more strange than we thought.

Amazing things happen in the day-to-day sky, often unseen and unwitnessed in our normal routine. Just such a 'non-event' happened this week, when Venus reached inferior conjunction between the Earth and the Sun on its race from the dusk to the dawn sky. And what's more amazing, is the fact that some skilled observers followed this passage and caught sight of Venus as a tiny blazing 'ring of fire' silhouetted against the sky.

A new study by Prof. Kipping of Columbia University indicates that extraterrestrial life should be statistically significant, even if intelligent life is rare.