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Binary systems or neutron star.
The ESA's Integral gamma-ray observatory has resolved the diffuse glow from the heart of the Milky Way into hundreds of individual sources, solving a mystery that has stumped Astronomers for more than 30 years. Astronomers believed that the gamma ray glow came from the interactions of atoms, but this couldn't explain why the glow was so strong. Integral was able to see the individual celestial objects, and the data suggests that they might be binary systems, where a black hole or neutron star is orbiting another star.
Space tourism company Space Adventures announced this week that they're shopping around for a potential spaceport location. They're considering sites around the world, and the facility would include a launch pad (or runway) for sub-orbital flights, a spaceflight training centre, and other activities. Space Adventures has already taken over 100 reservations for sub-orbital flights; they just need a vehicle.
New research funded by NASA indicates that some models of Climate change might be overestimating what impact water vapour will have in raising average temperatures. This new study, based on data gathered by the Upper Atmosphere Research satellite (UARS), verified that water vapour increases in the atmosphere as surface temperatures rise, but not as much as previously theorized. water vapour is a significant greenhouse gas, so this new research will help scientists make much better predictions about future climate changes.
The NASA/ESA Ulysses spacecraft's power is starting to run down, and soon it won't have enough to keep itself warm. When the spacecraft was first launched in 1990 to study the Sun, its reactor produced 285 watts of power, but now almost 14 years later, it's down to 207 watts. If it gets too much lower, the spacecraft won't be able to operate the heaters that keep the fuel flowing. Without this fuel, it won't be able to orient its main antenna towards the Earth to transfer data.
Oxygen is one of the most important elements on Earth to life, and it comprises a fifth of our atmosphere. It's a volatile element, so it can't exist in large quantities unless something, like life, is continually producing it. The mainstream view is that plants evolved oxygen photosynthesis early on, and then produced large amounts of oxygen. Another view, tested under laboratory conditions, is that when volcanic rocks weather, they release oxygen into the atmosphere. Perhaps it's a combination of these factors that built up our oxygen.
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