SUNSET: 
How “Light Echoes” Revealed a Black Hole’s Feeding Habits
Astronomers are taking a cue from bats, using a method similar to echolocation to map out the feeding environment around a black hole.
Light Echoes Map Planet-forming Disk
Light’s finite speed helped astronomers pinpoint the location of the “inner wall” of the disk of dust and gas that’s feeding a fast-growing baby star.
Witnessing Light Echoes from a Neutron Star
X-ray echoes from binary star system Circinus X-1 are helping astronomers measure its distance from Earth.
Watch a Mesmerizing Light Show
The gossamer veil of reflective dust surrounding the star RS Puppis reflects its flickering light in a fantastic display.
A Light Echo Revisited
The light pulse from a stellar flare has lit the surrounding gas in majestic colors.
