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Did a 5th Giant Planet Mess up the Orbits of Jupiter, Saturn, Uranus and Neptune? — Universe Today

The solar system’s current planetary orbits seem stable, but that’s only because the planets have settled into them over billions of years.  The early solar system was a much different place than that seen today, and for almost 20 years, scientists thought they had a good handle on how it got that way.  727 more…

Did a 5th Giant Planet Mess up the Orbits of Jupiter, Saturn, Uranus and Neptune? — Universe Today

Dust Might Reveal the Presence of Habitable Planets — Universe Today

NASA’s next great space telescope should launch no later than 2027. The Nancy Grace Roman Space Telescope is a powerful wide-field infrared telescope that will create panoramic fields of view 100 times greater than Hubble’s. 1,833 more words

Dust Might Reveal the Presence of Habitable Planets — Universe Today

Planets Have Just Started to Form in This Binary System — Universe Today

Astronomers have watched the young binary star system SVS 13 for decades. Astronomers don’t know much about how planets form around proto-binary stars like SVS 13, and the earliest stages are especially mysterious. 1,532 more words

Planets Have Just Started to Form in This Binary System — Universe Today

Astronomers Scan 800 Pulsars to See If Any of Them Have Planets — Universe Today

Astronomers discovered the first exoplanets in 1992. They found a pair of them orbiting the pulsar PSR B1257+12 about 2300 light-years from the Sun. Two years later they discovered the third planet in the system. 2,143 more words

Astronomers Scan 800 Pulsars to See If Any of Them Have Planets — Universe Today