Ptolemaic Solar System media ptolemy39s solar system Ptolemaic Solar System

Ptolemaic Solar System media ptolemy39s solar system Ptolemaic Solar System

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A little interesting about space life.

If the authors' proposal is correct, then it successfully explains why Neptune's moon system looks so strange compared to Jupiter's or Saturn's--which means that astronomers' models of how these primordial systems form around gaseous giant worlds still hold strong.



and here is another

However, if we look closely on the original moon landing footage, we can see that the flag is actually standing still, and not moving in any way during the entire tape. But why is the flag still?



and finally

The Cassini-Huygens mission is a collaborative NASA/European Space Agency/Italian Space Agency robotic spacecraft that is observing the Saturn system. The spacecraft was initially constructed to sport two components: One is the European Space Agency-designed Huygens Probe named in honor of the Dutch mathematician and astronomer Christiaan Huygens (1629-1695), who discovered Titan. Huygens also studied the rings of Saturn. The second component, the NASA-designed Cassini Orbiter, was named for the Italian-French astronomer Giovanni Dominico Cassini (1625-1712) who discovered four of Saturn's other moons. After a long, difficult journey through interplanetary space, that took it from Earth to Saturn, Cassini-Huygens finally reached the realm of the ringed planet on July 1, 2004. On December 25, 2004, the Huygens Probe was deliberately severed from the Cassini Orbiter, and began its descent down to the long-veiled and hidden surface of Titan--sending back, to waiting astronomers on Earth, an abundance of valuable information about the mysterious moon-world. Titan, at last, had its hidden face unveiled--revealing its well-kept secrets. The mission will continue until 2017.

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The discovery that the hidden interior of Earth's Moon contains water raises some interesting questions concerning lunar formation. Most planetary scientists think that our Moon was born from the debris left behind after the catastrophic collision of our primordial planet with the tragedy that was Theia. This collision would have occurred very early in our Solar System's history. However, one of the reasons scientists had proposed that the lunar interior should be dry is that it is unlikely that the hydrogen necessary to create water could have survived following the ferocious heat of that ancient impact.



If this ancient catastrophic impact really did occur, there should be deposits of these tragic moons on the Martian surface. The Japanese Aerospace Exploration Agency (JAXA) is currently planning a sample return mission to Phobos and Deimos, the Martian Moons Explorer, and NASA has plans to eventually return samples to Earth from the surface of Mars-- perhaps as soon as the 2020s. At the conclusion of their paper, the authors note, "Our scenario provides further motivation for a sample return mission to the Martian satellites."



Now, by pinpointing the precise birthday of the Moon, Dr. Jacobson and his team can help to explain why the Moon and our planet are so mysteriously similar in their compositions.