Scientists may be closer to solving the mystery of how Mars changed from a world with surface water billions of years ago to the arid Red Planet of today.
A new analysis of the largest known deposit of carbonate minerals on Mars suggests that the original Martian atmosphere may have already lost most of its carbon dioxide by the era of valley network formation.
The modern Martian atmosphere is too tenuous for liquid water to persist on the surface. A denser atmosphere on ancient Mars cou [...]
Dominating this image is part of the gigantic nebula Gum 56, illuminated by the hot bright young stars that were born within it. For millions of years stars have been created out of the gas in this nebula, material which is later returned to the stellar nursery when the aging stars either expel their material gently into space or eject it more dramatically as supernova explosions. This image was taken with the MPG/ESO 2.2-metre telescope at the La Silla Observatory in Chile as part of ESO’s Co [...]
The Soyuz TMA-18M launched from the Baikonur Cosmodrome in Kazakhstan to the International Space Station at 12:37 a.m. EDT Wednesday (10:37 a.m. in Baikonur). At launch, the station was flying 250 miles above south-central Kazakhstan, having passed over the Baikonur Cosmodrome less than a minute before liftoff. Sergey Volkov of Roscosmos, Andreas Mogensen of ESA (European Space Agency) and Aidyn Aimbetov of the Kazakh Space Agency are now are safely in orbit.
They are on a two-day course to d [...]
Cape Canaveral Air Force Station, Fla. – A United Launch Alliance (ULA) Atlas V rocket carrying the fourth Mobile User Objective System satellite for the U. S. Navy launched from Space Launch Complex-41 at 6:18 a.m. EDT today. The MUOS-4 spacecraft will bring advanced, new, global communications capabilities to mobile military forces, as well as ensure continued mission capability of the existing Ultra High Frequency satellite communications system. This is ULA’s eighth launch in 2015, the s [...]
Is this person throwing a lightning bolt? No. Despite appearances, this person is actually pointing in the direction of a bright Iridium flare, a momentary reflection of sunlight off of a communications satellite in orbit around the Earth. As the Iridium satellite orbits, reflective antennas became aligned between the observer and the Sun to create a flash brighter than any star in the night sky.
Iridium flares typically last several seconds, longer than most meteors. Also unlike meteors, the [...]
An international crew of three is ready for a two-day ride to the International Space Station. The Soyuz rocket that will lift them to space is set to launch tonight from the Baikonur Cosmodrome in Kazakhstan at 12:37 a.m. EDT Wednesday, June 2.
Veteran cosmonaut Sergey Volkov will command the Soyuz TMA-18M spacecraft. Joining him for the trip to the station will be first time flyers Andreas Mogensen from the European Space Agency and Aidyn Aimbetov from Kazcosmos, the National Space Agency [...]