Rosetta Observations Spark Debate on Origin of Earth's Water

Comet 67P/Churyumov-Gerasimenko on 20 November 2014. This mosaic comprises four individual NAVCAM images taken from 30.8 km from the centre of Comet 67P/Churyumov-Gerasimenko on 20 November 2014. Credit: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0

Comets? Asteroids? Or what?

One of the most basic questions driving Astronomy and Space Exploration is: Where did the […]

NASA’s Opportunity Rover Snaps First-Ever Comet Image From Mars' Surface During Comet's Ultra-Close Martian Flyby

NASA’s Opportunity rover snaps this first-ever image of a comet (fuzzy object at center) from another planet’s surface during close flyby of Comet Siding Spring with Mars on Oct. 19, 2014. This pancam raw image was taken on Sol 3817. Inset shows enhanced view revealing more comet detail. Credit: NASA/JPL/Cornell/ASU/TAMU. Image Processing: Marco […]