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Citizen scientists find a failed star in the Sun's neighborhood
Citizen scientists may not have the time and equipment of their pro counterparts, but their dedication can sometimes lead to discoveries that would otherwise be impractical. Case in point: a NASA-backed citizen science initiative, Backyard Worlds: Planet 9, has found a brown dwarf (effectively, a failed star) relatively close to the Sun at 110 light years away. Rosa Castro and three other amateur observers combed through a "flipbook" of images from the Wide-field Infrared Survey Explorer to spot the dwarf as it traversed through space. The discovery is notable for a few reasons, and not just because dedicated astronomers didn't catch it.
Satellite captures a baby star's 'growth spurt'
It's trivial to see mature stars in action, but baby stars are another matter. They 'only' spend 150,000 years in their earliest formative stage, and they rarely give away clues that they're around. That's what makes the above pictures so important -- scientist Emily Safron and colleagues have become the first to spot a very young protostar's "outburst," or the growth spurt that typically happens when the forming celestial body accumulates a lot of gas and dust relatively quickly. After poring over data from NASA's Wide-field Infrared Survey Explorer satellite, the astronomers noticed that a future star that was once virtually invisible, HOPS 383, lit up in the space of just a few years; it got 35 times brighter between 2006 and 2008. You won't see it finish growing up (it's 1,400 light years away, for one thing), but it's likely well on its way toward generating its own energy and officially joining the stellar ranks. [Image credit: E. Safron et al./NASA/JPL-Caltech/Univ. of Toledo]
Trojan asteroid caught circling Earth, the Greeks deny involvement
Hide your kids, hide your wife, there's an asteroid circling Earth's orbit and we're all gonna... be just fine? Yeah, no need to stock up those '60s fallout shelters folks, this approximately 1,000 feet wide space rock is sitting pretty and safe in one of our Lagrange points. The so-called Trojan asteroid, known as 2010 TK7, was uncovered 50 million miles away by the infrared eyes of NASA's Wide-field Infrared Survey Explorer (WISE) telescope, and is the first of its kind to be discovered near our humble planet. Typically, these near-Earth objects (NEOs) hide in the sun's glare, but this satellite's unusual circuit around our world helped WISE and the Canada-France-Hawaii telescope confirm its existence. The finding has our best and brightest giddy with the hope similar NEOs "could make excellent candidates for future robotic or human exploration." Unfortunately, our new planetoid friend's too-high, too-low path doesn't quite cut the space mission mustard. No matter, 2010 TK7 still gets to call "First!"
