NASA holds a news conference to discuss the close encounter of Comet Siding Spring with Mars. On October 19, 2014, the comet will pass 139,500 kilometers (88,000 miles) from the red planet.
Look low to the south-southeast at 11:35pm BST tonight and, if the current British “monsoon” clears, you will see the full Moon rising at dusk at the instant the 2016 summer solstice occurs in the Northern Hemisphere. The last time that this happened on the same UK day was 22 June 1967.
Scientists are using SOFIA to survey young stars more than ten-times the mass of the Sun in an ongoing study to understand how massive stars form in our galaxy.
Engineers have completed testing of the James Webb Space Telescope and are preparing the observatory for shipment to Kourou, French Guiana, for launch.