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“Planets”

Apr 16, 2015 02:00 PM ET // Irene Klotz
NASA’s MESSENGER spacecraft is in the final days of an unprecedented and unexpectedly long-lived, close-up study of the innermost planet of the solar system, with a crashing finale expected in two weeks.
Apr 15, 2015 01:31 PM ET // Ian O'Neill
This is the first color photo of Pluto and moon Charon captured by NASA's New Horizons mission, providing an exciting clue as to what lies in store during the spacecraft's flyby on July 14.
Apr 8, 2015 01:00 PM ET // Irene Klotz
The primordial planet believed to have smashed into baby Earth, creating a cloud of debris that eventually formed into the moon, was chemically a near-match to Earth.
Apr 1, 2015 01:00 PM ET // Irene Klotz
When it comes to making planets as big as Jupiter, Mother Nature has kept her recipe secret. But scientists believe they have finally cracked the mystery.
Mar 27, 2015 12:32 PM ET
There are many things in life whose constancy we can rely on -- friends, family, death, taxes -- but our home planet isn't one of them. Things are 'a' changin'. Slooowly. How would you feel about longer days, shorter springs, and a new north star?
Mar 25, 2015 03:30 PM ET // Nola Taylor Redd, SPACE.com Contributor
The ringed planet might have a longer day than originally calculated.
Mar 23, 2015 03:00 PM ET // Irene Klotz
Jupiter's early migration through the inner solar system caused gravitational mayhem, but it ultimately settled to allow Earth to form in a relatively quiet neighborhood.
Mar 18, 2015 08:30 AM ET // Irene Klotz
A study based on 151 multi-planetary systems found by NASA's Kepler space telescope shows that most have a planet -- or two or three.
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