您现在的位置是:知識 >>正文
【】
知識6人已围观
简介It's been a big year for black holes. Back in April, NASA gave us our first direct glimpse of an exi ...
It's been a big year for black holes. Back in April, NASA gave us our first direct glimpse of an existentially terrifying gravitational event, and now, the agency has gotten another look at what one can do to a star much like our own sun.
NASA announced this week that Transiting Exoplanet Survey Satellite (or TESS) managed to spot what's called a tidal disruption event. In layman's terms, that's when a star gets a little too close to a black hole and, well, it stops being a star after that.
There's a lot of fun space lingo at play here. NASA is calling the event ASASSN-19bt, named after the ASAS-SN telescope network that first noticed the tidal disruption back in January. Once the star got close enough to the black hole, it experienced something known as "spaghettification," which is when an object encounters gravity so powerful that it gets stretched out like noodles.
This particular black hole is around 375 million lightyears away in the elegantly named galaxy of 2MASX J07001137-6602251. NASA estimates it weighs six million times the mass of our own sun, which happens to be comparable in size to the star that tragically lost its life to this tidal disruption event.
To be clear, this isn't the first time humans have seen a tidal disruption event, though they are astonishingly rare. They happen somewhere between every 10,000 and 100,000 years in a comparable galaxy to our own. NASA said astronomers have seen 40 of these events, though few have been observed as early as the one TESS caught.
Any direct observation of a black hole is notable because black holes can't really be seen, by nature. It's a point in space where gravity is so strong that not even light can escape its grasp, but we can still observe its effects on things around it. The famous first-ever photo of a black hole earlier this year was in actuality a photo of gas gathered around a black hole.
That means we should relish any chance we get to see what a black hole can do, and be glad that it's not happening anywhere near us.
Tags:
转载:欢迎各位朋友分享到网络,但转载请说明文章出处“夫榮妻貴網”。http://new.maomao321.com/news/10e52799462.html
相关文章
Chinese gymnastics team horrifies crowd with human jump rope
知識Awesome. Also, ouch.。The Chinese acrobatic team wowed and horrified the crowd at the Rio Olympic gym ...
【知識】
阅读更多女足年終排名:中國隊下滑兩位列第19 平曆史新低
知識女足年終排名 :中國隊下滑兩位列第19 平曆史新低_中國女足_奧運會_美國女足www.ty42.com 日期:2021-12-10 17:31:00| 評論(已有318704條評論) ...
【知識】
阅读更多3場丟8球!藍軍防線崩盤勝不足喜 最穩一環成短板
知識3場丟8球!藍軍防線崩盤勝不足喜 最穩一環成短板_切爾西_比賽_在英超www.ty42.com 日期:2021-12-12 02:01:00| 評論(已有318940條評論) ...
【知識】
阅读更多