Photographs snapped by a shoebox-sized probe that explored the near-Earth asteroid Ryugu have offered new clues about its composition, insights that will help scientists understand the formation of our solar system.
India's Chandrayaan-2 spacecraft has settled into lunar orbit, ahead of its scheduled moon landing on September 7. If it succeeds India will join a very select club, now comprising the former Soviet Union, the United States and China.
For centuries, miners have burrowed into the earth in search of salt—laid down in thick layers from ancient oceans long since evaporated. When scientists saw huge deposits of salt on Mars, they immediately wondered whether it meant Mars too once had giant oceans. Yet it's remained unclear what those deposits meant about the Red Planet's climate.
Steam balloons could be used to lift space rockets to higher altitude for launch. Launching from high altitude reduces air drag and thus improves efficiency. The researchers present the method in an article published in The Aeronautical Journal.
The secondary mirror—visible in the top right corner of the image—is among the most important pieces of equipment on the NASA/ESA/CSA James Webb Space Telescope (JWST) and is essential to the success of the mission.