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The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it looks like. Now, new simulations may have given them a first glimpse.

"We have been waiting for 10 years to confirm that our finely tuned operations of the telescope would also allow us to access ...

These legendary probes have traveled beyond our solar system and detected something strange at the edge of interstellar space. What could it be? Signals from an unknown source? A glimpse into the ...

The discovery is keeping astronomers on their toes about how planets are formed.

Staring at the sun—a close (but safe) look at our home star Staring at the sun ... Free learning activities and videos about the solar system Free learning activities and videos about the ...

The James Webb Space Telescope captures the first direct images of carbon dioxide in a distant planetary system, HR 8799, ...

The latter behaved more like a typical comet but still appeared to have traveled from well beyond our solar system. However, new simulations suggest that these weren’t isolated objects.

The exact shape of the Oort cloud and how it is affected by forces beyond our solar system have, so far, remained mysterious. Now, researchers have developed a new model that suggests the inner ...