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Astronaut Chris Hadfield ask canadian astronaut chris hadfield a question canadacom Chris Astronaut Hadfield

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Interesting facts about space.

Only after Triton's orbit became circular, around its adopted parent-planet, could some of the rubble re-accrete to form the moons of Neptune that astronomers observe today. Triton's highly disruptive invasion of the Neptune system may be the reason why the moons of Neptune do not conform to the 10,000:1 ratio of mass between parent-planet and moon-offspring that literally all of the moons observed in the satellite systems of the other giant planets in our Solar System conform to.



and here is another

Pluto itself is a relatively large denizen of the distant Kuiper Belt, that orbits our Sun in the frigid company of a vast multitude of other bewitching and mysterious icy objects. Like other Kuiper Belt Objects (KBOs), Pluto is thought to be composed primarily of ice and rock. It is an intriguing frozen "oddball", a mere 1/6 the mass of Earth's own Moon and 1/3 its volume. Pluto also has a highly inclined, eccentric orbit that carries it from 30 to 49 Astronomical Units (AU) from our Sun. One AU is equal to the mean Earth-Sun separation of 93,000,000 miles. As a result, Pluto periodically moves towards our Sun at a distance that is closer to our Star than Neptune. Very fortunately for both Neptune and Pluto, an orbital resonance with Neptune prevents the duo from crashing into each other.



and finally

It is true that even our most powerful telescopes aimed at the landing sites wouldn't see anything. However, not because the Moon landings didn't happen. It is only because of the optical limitations of telescopes themselves, because of their limited size and distance from the Moon.

Other facts:

Kepler-22b is an extrasolar planet that circles Kepler-22, a G-type star that is situated about 600 light-years from our own planet in the constellation Cygnus. This intriguing new world, that resides beyond our Solar System, was first spotted by NASA's highly productive, though ill-fated, Kepler Space Telescope in 2011. Kepler-22b has the distinction of being the first known transiting extrasolar planet to reside within the so-called habitable zone of its star. The habitable zone is the term used to describe that Goldilocks region around a star where water can exist in its life-loving liquid state. Planets dwelling in this fortunate region are not too hot, not too cold, but just right for water and, hence, life to exist. A planet that circles its star in the habitable zone suggests that there is the possibility--though not the promise--of life as we know it to exist on that world.



Mystifying, bewitching, and swathed in a heavy, dense shroud of orange hydrocarbon mist, Titan circles its immense gas-giant parent-planet, Saturn, and is a remarkable world in its own right. Slashed by strange rivers and seas of ethane, methane, and propane, and pelted by large and lazy drops of hydrocarbon rain, Titan is an eerie, tormented, and mysterious moon-world orbiting its magnificent and beautiful ringed parent-planet, in the distant outer realm of the giants--Jupiter, Saturn, Uranus, and Neptune. The four enormous and gaseous wonderland worlds are unlike the quartet of much smaller rocky denizens of the inner Solar System--Mercury, Venus, Earth, and Mars. Because of its dense orange blanket of smog, the geological features of Titan's surface were hidden from the prying eyes of curious astronomers until 2004 when the Cassini/Huygens orbiter and lander finally arrived there--and started to unveil its long-hidden face. In April 2016, a team of planetary scientists announced yet another important revelation about this moon-world--a large sea on Titan is composed primarily of pure liquid methane, with the seabed itself possibly well-coated in a sludge of carbon-and nitrogen-rich material, as well as showing strange shores surrounded by wetlands.



All New to Mother Earth. This new belt of cosmos that the Sun is going through is all new to Mother Earth. This yearly trek is not the same as last year's. It is quite an adventure, full of surprises, for her to adapt and of course for us as her inhabitants to adjust as well.