Astronaut Buzz Aldrin talks about photos of a monolith-like structure on Mars, captured by the Mars Reconnaissance Orbiter - And Buzz Aldrin talks about a similar structure on the Martian moon, Phobos.
Here's an extract from a very interesting article i just read on space.com
A sudden bright spot that appeared in the clouds of Venus just days after a comet left a bruise on Jupiter has scientists stumped as to its cause.
Venus' bright spot, first noticed by amateur astronomer Frank Melillo of Holtsville, NY on July 19, is not the first such brightening noticed on our cloudy neighbor, said planetary scientist Sanjay Limaye of the University of Wisconsin-Madison.
This time is a little different though because the brightening is confined to a smaller region, Limaye said. It also came in the wake of Jupiter'sown new (dark) spot, believed to be the result of a comet impact — Limaye attributes the fortunate confluence of the two events for the attention Venus is now getting in the astronomical community.