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A little interesting about space life.
How did Triton acquire so many strange properties, and why is Neptune's system of satellites so different from those predicted for a gaseous giant planet? Two planetary scientists, Dr. Raluca Rufu (Weizmann Institute of Science, Israel) and Dr. Robin Canup (Southwest Research Institute, US) demonstrate how Triton wreaked catastrophic havoc on Neptune's first generation of very unfortunate moons.
and here is another
However, weeks before New Horizons' scheduled arrival at its main target, it managed to reveal some strange secrets long-held in the deep freeze of our Solar System's outer limits. For their new study, released in June 2015, a team of planetary scientists collected all available NASA and European Space Agency (ESA) Hubble Space Telescope (HST) data on the four outer moons of Pluto in order to study this strange system in greater depth. Their observations reveal that at least a duo of Pluto's moons are not rotating on their axes in an orderly manner at all, but are instead in chaotic rotation while circling Pluto and its large companion moon, Charon--a moon-world that weighs-in at a hefty 11% of Pluto's mass. Charon is commonly thought to have once been a part of Pluto itself, before it was blasted off in a catastrophic collision with another object billions of years ago. The new study also suggests that one of the mystery moons has a bizarre jet-black coloring of unknown origin and composition. These truly amazing results appear in the June 4, 2015 issue of the journal Nature.
The exact composition of these bodies of liquid remained unknown until 2014, when the radar instrument aboard Cassini was first used to show that Ligeia Mare, the second largest sea on Titan, is richly endowed with methane. Ligeia Mare is similar in size to two of the Great Lakes on Earth combined--Lake Huron and Lake Michigan! The new study, published in the February 25, 2016 issue of the Journal of Geophysical Research: Planets, which used the radar instrument in a different mode, independently confirmed the 2014 result. "It's a marvelous feat of exploration that we're doing extraterrestrial oceanography on an alien moon," commented Dr. Steve Wall in an April 26, 2016 Jet Propulsion Laboratory (JPL) Press Release. Dr. Wall, who is of the JPL in Pasadena, California, is Cassini radar team deputy lead.
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The astronomer Tycho Brahe, during the 17th century, measured the diurnal parallax of Mars that Johannes Kepler had used in order to make a preliminary calculation of the relative distance to the Red Planet. When the earliest telescopes to be used for astronomical purposes finally became available, the diurnal parallax of Mars was measured again in an attempt to determine the distance between our Sun and Earth. Giovanni Domenico Cassini was the first to make this measurement in 1692--but the early parallax measurements were hindered by the primitive quality of the instruments. The only occultation of Mars by the planet Venus was observed on October 13, 1590, by Michael Maestlin at Heidelberg. In 1610, Mars was viewed by the great astronomer Galileo Galilei, who was the first to make use of a primitive telescope for astronomical purposes. The Dutch astronomer Christiaan Huygens was the first to draw a map of Mars that showed terrain features.
This revised birth date for the Moon comes from a new study that takes a detour from the long-standing debate about its true age, and is basically in agreement with those planetary scientists who suggest a late-forming Moon. The new method that the scientists used to arrive at their conclusion eliminates numerous problems with traditional methods for calculating the Moon's age.
New Moon and Full Moon Times. New Moon, June 12, 2010 4:15 am, PDT. Full Moon, June 26, 2010 4:31 am, PDT