Astrum on MSN
Voyager left the planets - but not the solar system
The boundary of a solar system is not defined by planets, but by gravity. Beyond Pluto and the Kuiper Belt lies the Oort ...
The sun’s outer atmosphere resembles a pufferfish.
How big it is: 865,000 miles (1.392 million kilometers) across How far away it is: 93 million miles (150 million km) What type of star it is: A yellow dwarf star The sun is the star at the center of ...
Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new simulations show. By Katherine Kornei If our species manages to hang on ...
The Daily Galaxy on MSN
A passing star could fling Earth out of orbit faster than anyone previously predicted
In the vast calm of the solar system, planetary orbits often appear orderly, stable, and insulated from the broader mechanics ...
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