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Keep an eye to the sky this week for a chance to see a planetary hangout. Five planets Mercury, Jupiter, Venus, Uranus and Mars will line up near the moon. WHERE AND WHEN CAN YOU SEE THEM? The best day to catch the whole group is Tuesday. You'll want to look to the western horizon right after sunset, said NASA astronomer Bill Cooke. The planets will stretch from the horizon line to around halfway up the night sky. But don't be late: Mercury and Jupiter will quickly dip below the horizon around half an hour after sunset. The five-planet spread can be seen from anywhere on Earth, as long as you have clear skies and a view of the west. That's the beauty of these planetary alignments. It doesn't take much, Cooke said. DO I NEED BINOCULARS? Maybe. Jupiter, Venus and Mars will all be pretty easy to see since they shine brightly, Cooke said. Venus will be one of the brightest things in the sky, and Mars will be hanging out near the moon with a reddish glow. Mercury and Uranus could
All astronomers concur that planets are created in protoplanetary discs, which are the bands of gas and dust that encircle newly formed, young stars. Even though the universe has hundreds of these discs, it has been challenging to observe genuine planetary birth and development in these settings.Currently, astronomers at the Center for Astrophysics | Harvard & Smithsonian have created a novel method to find these elusive newborn planets, along with "smoking gun" proof of a small Neptune or Saturn-like planet hiding in a disc. The Astrophysical Journal Letters today published a description of the findings.According to Feng Long, a postdoctoral scholar at the Center for Astrophysics and project leader, "directly finding young planets is highly tough and has thus far only been effective in one or two situations." Because they are encased in substantial amounts of gas and dust, planets are always too dim for us to see them.Instead, they must look for signs that a planet is forming ..