NASAのインスタグラム(nasa) - 11月8日 07時34分

Astronomers using NASA’s Hubble Space Telescope have completed the largest and most sensitive visible-light imaging survey of dusty debris disks around other stars. These dusty disks, likely created by collisions between leftover objects from planet formation, were imaged around stars as young as 10 million years old and as mature as more than 1 billion years old.

Once thought to be simply pancake-like structures, the unexpected diversity and complexity and varying distribution of dust among these debris systems strongly suggest the disks are gravitationally-affected by unseen exoplanets orbiting the star. Alternatively, these effects could result from the stars passing through interstellar space.

This is an image from the Hubble Space Telescope visible-light survey of the architecture of debris systems around young stars. Hubble's sharp view uncovers an unexpected diversity and complexity in the structures.

Image Credit: NASA/ESA/G. Schneider/U. Arizona

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