A scientist from Siberian Federal University (SFU) and his colleagues from Austria and Germany constructed a physical and mathematical model of Mars- and Venus-sized planet formation. The team concluded that Mars had no chances to develop a thick atmosphere and biosphere. In the case of Venus it depended on solar activity: according to the scientists, it managed to keep its atmosphere due to the fact that young Sun was not very active. The study was published in Icarus.
Astronomers have come up with a new and improved method for measuring the masses of millions of solitary stars, especially those with planetary systems.
The elementary particles of 'new physics' must be so massive that their detection in the LHC, the largest modern accelerator, will not be possible. This none- too-optimistic conclusion comes from the most comprehensive review of observational data from many scientific experiments and their confrontation with several popular varieties of supersymmetry theory. The complicated, extremely computationally demanding analysis was carried out by the team of the international GAMBIT Collaboration -- and leaves a shadow of hope.
Three mathematicians have a different explanation for the accelerating expansion of the universe that does without theories of 'dark energy.' Einstein's original equations for General Relativity actually predict cosmic acceleration due to an 'instability,' they argue in paper published recently in Proceedings of the Royal Society A.
A University of Leicester scientist leads a Cassini mission study into immense northern storms on Saturn.
It's beginning to look a lot like the holiday season in this NASA Hubble Space Telescope image of a blizzard of stars, which resembles a swirling snowstorm in a snow globe.
Astronomers have used two Australian radio telescopes and several optical telescopes to study complex mechanisms that are fuelling jets of material blasting away from a black hole 55 million times more massive than the Sun.
A team of astronomers from Maryland, Hawaii, Israel and France has produced the most detailed map ever of the orbits of galaxies in our extended local neighborhood, showing the past motions of almost 1,400 galaxies within 100 million light years of the Milky Way. The team reconstructed the galaxies' motions from 13 billion years in the past to the present day.
UT Dallas researchers develop speech-processing techniques to reconstruct NASA lunar mission audio from a massive archive. The team developed algorithms to process, recognize and analyze the audio to determine who said what and when in an advance in diarization research.
The US space exploration program should continue to focus on robotic sample recovery and human missions to Mars, says Scott Hubbard, Editor-in-Chief of New Space.