exoplanet

Scientists have detected water vapor on other planets in the past, but these detections could only take place under very specific circumstances. The new technique expands a radial velocity technique, commonly used to detect carbon dioxide using light in the visible spectrum, into the infrared spectrum. This has opened up the ability of astronomers to analyze the molecules that comprise the atmosphere of exoplanets that don't exist under those specific circumstances.

Photo from Heavens Above

A rare astronomical event takes place Tuesday, June 5, when Venus passes between the sun and the earth. It's called the Transit of Venus.

“Unless you live to December 2117, this is your last chance to see it,” said Brian Davies, Assistant Professor of Physics at Western Illinois University.

The last Transit of Venus occurred in 2004. None happened in the 20th Century.