* Astronomy

The planet Venus is almost the same size as Earth, so it has been called Earth's twin. It's only about 30 percent closer to the sun than Earth, and at the dawn of the space age, scientists thought its cloudy atmosphere might hide a steamy jungle planet teeming with life. However, when the first American and Russian space probes visited Venus in the 1960s, it became clear that something had gone terribly wrong with the planet's ability to support life.
Vesper, the Latin name for "Evening Star" or Venus, is a proposed NASA Discovery-class mission that would increase our knowledge of what the planet's atmosphere is made of and how it changes. Understanding the atmosphere of Venus will help scientists learn how a world that might have been a tropical Eden became instead a close approximation of Hell.

Read more