Gravitational Lensing
A new Technique Could use Quasars to Directly Measure the Expansion Rate of the Universe
The evolution of cosmic expansion could be measured by a new method using intensity correlation speckles.
You Thought Black Hole Event Horizons Looked Strange. Check out Binary Black Hole Event Horizons
Binary black holes lens light so strongly it's difficult to simulate how they would appear. A new simulation shows us…
Gaia Finds 12 Examples of Einstein Crosses; Galaxies Being Gravitationally Lensed so we see Them Repeated 4 Times
After examining data from the Gaia Observatory, a team of researchers found 12 more examples of the rare phenomenon known…
An Intermediate-Mass Black Hole Discovered Through the Gravitational Lensing of a Gamma-ray Burst
An intermediate mass black hole was discovered by its chance alignment with a gamma ray burst.
Dark Energy Survey Finds Hundreds of New Gravitational Lenses
It’s relatively rare for a magical object from fantasy stories to have a analog in real life. A truly functional…
One of the Largest, Most Complete Einstein Rings Ever Seen. Astronomers Call it the “Molten Ring”
A very rare astronomical phenomenon has been in the headlines a lot recently, and for good reason. It will be…
If We Used the Sun as a Gravitational Lens Telescope, This is What a Planet at Proxima Centauri Would Look Like
A recent study shows how the Sun could be used as a gravitational lens to take direct images of nearby…
A new way to map out dark matter is 10 times more precise than the previous-best method
Astronomers have to be extra clever to map out the invisible dark matter in the universe. Recently, a team of…
Something other than just gravity is contributing to the shape of dark matter halos
Galactic dark matter is in a state of maximum entropy, which means it must interact with itself.
Gravitational-Wave Lensing is Possible, but it’s Going to be Incredibly Difficult to Detect
Because gravitational waves travel at the speed of light, they can be lensed just as light waves are. But observing…