Light Echoes from Our Supermassive Black Hole
Astronomers believe that an object with the mass of the planet Mercury was devoured by the black hole about 50 years ago. The event released a torrent X-rays that flooded out in all directions. Some of those X-rays collided with nearby gas clouds, and were reflected in our direction.
Chandra imaged the same region for three years in a row, and saw that the shape and brightness of the clouds changed matching theoretical predictions made by astronomers. Since X-ray emissions are stopped by the Earth’s atmosphere, and we didn’t have an X-ray observatory in space 50 years ago, nobody was able to see the original event. All we get to see is the echo.
Original Source: Chandra News Release
Recent Posts
Two Stars in a Binary System are Very Different. It's Because There Used to be Three
A beautiful nebula in the southern hemisphere with a binary star at it's center seems…
The Highest Observatory in the World Comes Online
The history of astronomy and observatories is full of stories about astronomers going higher and…
Is the JWST Now an Interplanetary Meteorologist?
The JWST keeps one-upping itself. In the telescope's latest act of outdoing itself, it examined…
Solar Orbiter Takes a Mind-Boggling Video of the Sun
You've seen the Sun, but you've never seen the Sun like this. This single frame…
What Can AI Learn About the Universe?
Artificial intelligence and machine learning have become ubiquitous, with applications ranging from data analysis, cybersecurity,…
Enceladus’s Fault Lines are Responsible for its Plumes
The Search for Life in our Solar System leads seekers to strange places. From our…