Black Hole Collision Merge NASA
Astronomers may have seen witnessed for the first time light from the merger of two black holes. More specifically, a supermassive black hole surrounded by a disk of gas and within this disk are two smaller black holes that could have merged together to form a new one. Typically when two black holes spiral around each other and eventually collide, they send out gravitational waves, which are invisible to telescopes and other light-detecting instruments used by astronomers. Read more for a video about black hole collisions and additional information.



Theorists concocted several ideas about how a black hole merger could produce a light signal by causing nearby material to radiate. Now, they are using Caltech’s Zwicky Transient Facility (ZTF) located at Palomar Observatory near San Diego to search for such a scenario. If one of these events is confirmed, it would be the first known light flare from a pair of colliding black holes.

Sale
Celestron - 70mm Travel Scope - Portable Refractor Telescope - Fully-Coated Glass Optics - Ideal Telescope for Beginners - BONUS Astronomy Software Package
11,847 Reviews
Celestron - 70mm Travel Scope - Portable Refractor Telescope - Fully-Coated Glass Optics - Ideal Telescope for Beginners - BONUS Astronomy Software Package
  • Superior optics: The Celestron 70mm Travel Scope features high-quality, fully-coated glass optics, a potent 70mm objective lens, a lightweight frame, and a custom backpack to carry it all. Its quality is unmatched in its class and against competitors.
  • Powerful eyepieces for up-close viewing: Our telescope for astronomy beginners is equipped with two high-quality eyepieces (20mm and 10mm) that provide low- and high-power views of celestial objects at night and terrestrial objects during the day.
  • Large 70mm objective lens: Our refractor telescope is equipped with a large 70mm aperture objective lens that provides enhanced, brighter views compared to the 50mm model while adding very little additional weight. Setting up and using the Travel Scope is quick and easy.
  • Bonus bag, tripod, and software: This Celestron telescope and full-height tripod can be taken anywhere in the included travel backpack. Accessories also include a FREE download of one of the top consumer rated astronomy software programs.
  • Unbeatable warranty and customer support: Buy with confidence from the telescope brand, based in California since 1960. You’ll also receive a 2-year warranty and unlimited access to technical support from our team of US-based experts.

The merger was identified on May 21, 2019, by two gravitational wave detectors – the National Science Foundation’s Laser Interferometer Gravitational-wave Observatory, or LIGO, and the European Virgo detector – in an event called GW190521g. That detection allowed the ZTF scientists to look for light signals from the location where the gravitational wave signal originated. These gravitational wave detectors have also spotted mergers between dense cosmic objects called neutron stars, and astronomers have identified light emissions from those collisions,” said NASA.