A ‘red nova’ star collision might occur within 5 years – business insider deutschland


One of the best-studied red novas happened in 2008. Euro to usd calculator The object, called V1309 Scorpii, was a double-star system (also called a binary) measured for over 6 years before it merged and erupted.

But astronomers are desperate to find more such binary systems before they detonate, since watching the cosmic collisions would not only reveal a lot about the evolution of stars and nebulas, but also how space gets seeded with elements necessary for life.

However, Larry Molnar, an astronomer at Calvin College in Grand Rapids, Michigan, has gone a big step further with a few colleagues: Over the past 2 years, he’s claimed not only to have found such a system, but also predicted when it will blow up as a red nova.

“No one has ever seen a star go into this kind of explosion. Rm to usd chart No other situation has come up where any astronomer has ever been able to say, ‘this is a star about to blow up,'” Molnar said in a preview for an upcoming documentary, called “Luminous.”

If you could magically teleport to the system, which is located about 1,700 light years from us amid the constellation Cygnus, it might appear as a brilliantly glowing bowling pin.

But no one was certain that KIC 9832227 was actually a double-star system; all astronomers knew was that its brightness varied over the years. Flower tattoos Many types of stars and star systems “pulsate” their brightness in this way, so Molnar and a Calvin College student had to first rule out any doubt that it was two stars.

What they found in 2015 is that it behaved much like V1309 Scorpii — one of the best-known binary systems to unpredictably merge — and that the stars’ mutual orbits were closing in.

“Over the past ten years, the period of KIC 9832227 has been getting shorter at a faster and faster rate,” Molnar and his team wrote in a research poster about their discovery. Put option and call option “This implies that the stars are orbiting faster and getting closer together.”

The team has recently ruled out more “mundane” explanations for what they see, according to a January 7 press release by Calvin College. Words in binary Predicting a violent stellar outburst

By using data from the few known examples, especially V1309 Scorpii, Molnar has calculated the approximate moment that the two stars of KIC 9832227 will collide: in the year 2022, “give or take a year,” according to the release.

If and when the two stars collide, the aftermath might look something like V838 Monocerotis, a star which suddenly flashed in 2002, temporarily becoming 600,000 times brighter than the sun — and the brightest object in the Milky Way galaxy.

Astronomers aren’t certain V838 Monocerotis is actually a red nova, but ever since 2002, the Hubble Space Telescope has kept its wandering eye on the expanding gas and dust of the object.