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Looking UP!

Robot looks up

Remote Sensors focus on space

  • the brightest supernova ever seen
  • how to photograph a black hole
  • a rare kind of galaxy discovered by an amateur
  • Chris Hadfield explains how to play a guitar when neither the guitar nor the player have any weight.

 

From Astronomy Magazine: Brightest supernova ever seen pushes theoretical models to the edge

In June 2015, a supernova appeared in the sky over the Southern Hemisphere, and astronomers believe it could mark the death throes of a very unusual star.The supernova, named ASASSN-15lh, was 20 times brighter at its peak than the combined light of the Milky Way galaxy’s 100 billion stars, making it the brightest supernova ever observed. In fact, it’s twice as bright as the previous record-holder. READ MORE

Also from Astronomy Magazine’s website: Photographing a Black Hole. The loudest nearby black hole (by some measurements, at least) is the Milky Way’s own central supermassive black hole, Sagittarius A* (“A-star”). And we might be about to get a real picture of its heart.

Feryal Ozel from the University of Arizona is part of the Event Horizon Telescope, and she presented its capabilities on the second day of the American Astronomical Society’s meeting in Kissimee, Florida. This telescope will take a picture of the innermost region of a black hole: its event horizon, where material passes the “point of no return” on its way toward being consumed.

But even for Sgr A*, the closest black hole, trying to image this area is like trying to resolve a DVD on the surface of the Moon. To do so would require building a telescope the size of the entire Earth. But luckily, Ozel and her team can do just that. READ MORE

From the Sky & Telescope magazine website: An amateur discovers a rare galaxy.

NGC-253-dw2-compositeMichael Sidonio Sidonio was just trying for a pretty picture, but later he noticed a small, elongated smudge off to one side. He didn’t see it plotted on any of his reference charts, but he figured professional astronomers must know about it. Well, they didn’t, and that triggered a succession of observations with ever-larger professional telescopes — culminating with the powerful Suprime-Cam on Japan’s 8-m Subaru Telescope. READ MORE.

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From the CBC:  Chris Hadfield on what to expect when playing guitar in space

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