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...solar system formed...[Oxygen found on comet 67P by the ESA's Rosetta spacecraft] Scientists are perplexed by the detection of molecular oxygen in comet 67P's tail - a completely unexpected discovery. Discovery of molecular oxygen in comet tail forces rethink on how the solar system formed Scientists have for the first time detected molecular oxygen (O2) in a comet’s...

...solar particles, forming the solar wind, which are expelled by the sun and are lower energy but much more numerous. The third source consists of trapped particles, which form invisible belts around planets with a strong enough magnetic field, such as that of the Earth. These last two sources fluctuate with solar activity, which follows an 11-year cycle. The effects of the...

...energy and gravity...[12 things to know about Einstein's theories of relativity] Source: SPACE.com: All about our solar system, outer space and exploration. This infographic was created by Space.com. Read more about 100 years of Einstein's Theory of General Relativity on their website. 12 Things to Know About Relativity Einstein’s theories of relativity revolutionised...

...solar system is generally accepted to have occurred close to 4.57 billion years ago. Scientists have long debated how long after this Earth’s Moon-forming impact occurred. The “late school” favoured 150-200m years after, whereas the “early school” favoured a date less than about 100m years after the origin. Now a new study suggests it was a very early date...

...solar systems. The size of even our galaxy, the Milky Way, leads to questions about whether or not we are the only life forms in the Universe. Although our nearest neighbouring solar system is around 4.5 light years away, looking to the astronomical bodies such as planets, moons, and even asteroids which orbit our Sun can give us valuable information about how life...

...energy keeps stars spinning at a precise rhythm. Here is the science behind three cosmic phenomena that just happen to look, and sound, like the symbols of love. 1. Why does the universe glow red? [The Heart Nebula]The Heart Nebula. If you look at the constellation Cassiopeia, about 6,000 light-years away, there is a colossal cloud of gas called the Heart Nebula. It looks...

...energy in the water to feed microbial life, scientists have been searching for proof that the right sort of reactions really do occur. [The Conversation] And during its last dive through the icy plumes that Enceladus erupts into space in October 2015, the Cassini spacecraft has finally managed to find it – in the form of molecular hydrogen. The finding, published in...