Tag Archives: Supernova

Youngest Supernova in Milky Way Found


G1.9+0.3A, seen here in a composite x-ray, radio, and infrared image, is the Milky Way’s youngest supernova, a new study has found.
Estimated at just 140 years old, G1.9+0.3 is at least 200 years younger than the next oldest known supernova, Cassiopeia A, which was discovered in the 17th century A.D.
“Cas A had been the reigning youngest remnant for so long that it took a while to sink in that we had found something less than half its age,” Reynolds said.
If it weren’t so obscured by dust, people in the late 1800s would likely have seen G1.9+0.3 appear in the constellation Sagittarius.

Isn’t that just the coolest thing you ever saw!!!!???

Astronomy Headlines: Supernova, Formation of Rocky Planets, Leonid Meteor Shower

1. Competing Theories Proposed for Superbright SupernovaAn x-ray image taken by NASA’s Chandra X-ray Observatory reveals supernova 2006gy (left) shining as bright as the nucleus of its galaxy. This puzzling brilliance has led scientists to propose two unusual formation mechanisms: a collision between two massive stars or a single, repeatedly exploding star.


2. Photo in the News: Star May Be Forming Rocky Planets The violent formation of a new solar system has left one heck of a mess around a nearby star—and suggests that Earthlike planets may be far more common than previously believed, scientists say. The debris indicates that the star system is in the midst of a violent planetary formation process, as dust particles—the “building blocks of planets”—form into comets and small asteroids and eventually into larger bodies, research team member Inseok Song of the Spitzer Science Center said in a press release.
The finding suggests that rocky planets like Earth, Mars, and Venus could be quite common in the universe. The vast majority of the 200 or so alien planets found so far have been giant gas worlds; only a few are less than 20 times the mass of Earth and only one is considered habitable.
“This is the first clear evidence for planet formation in the Pleiades, and the results we are presenting strongly suggest that terrestrial planets like those in our solar system are quite common,” study leader Joseph Rhee, a postdoctoral student at the University of California, Los Angeles, said in a statement.

3. Leonid Meteor Shower Peaks Saturday The annual light show, which occurs in mid-November, will return this year with a maximum of about a dozen meteors an hour at around 11 p.m. EST. North American skywatchers will get an unusually clear view, as the moon will set early and leave a dark canvas for the illuminations to begin.

As always, thanks to National Geographic for helping me to keep up with the latest in animal news, archaeology news and astronomy news!