Captured by the Hubble Space Telescope in February 2004, this image is part of a sequence showing the celestial progression of a light echo. Swirling interstellar dust is illuminated by a spherical ...

For the first time ever, scientists have seen the light from behind a black hole. Black holes are regions in space-time where gravity’s pull is so powerful that not even light can escape its grasp.

ANAHEIM, Calif. — Long after the black hole in the center of a galaxy sputters out, you can still see its ghost lingering in surrounding gas clouds aglow with leftover radiation, like wisps of smoke ...

Hubble has returned to the intriguing V838 Monocerotis many times since its initial outburst in 2002 to follow the evolution of its light echo. Two new images provide the most astonishing views of ...

A high school student in New York has stumbled onto a massive discovery — a cosmic light echo possibly spanning twice the width of the Milky Way. While scanning space for signs of dying stars, 17-year ...

The Hubble Space Telescope’s latest image of the star V838 Monocerotis (V838 Mon) reveals dramatic changes in the illumination of surrounding dusty cloud structures. The effect, called a light echo, ...

These shimmering cosmic curtains show interstellar gas and dust that has been heated by the flashbulb explosion of a long-ago supernova. The gas then glows infrared light in what is known as a thermal ...

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Astronomers can use light echoes to measure the distance from a star to its surrounding protoplanetary disk. This diagram illustrates how the time delay of the light echo is proportional to the ...