New Horizons Views Hydrogen Wall Near Edge of Solar System

A wall of hydrogen gas in the distant solar system has been spotted by astronomers. The object was seen in ultraviolet light by the New Horizons spacecraft, which visited Pluto in 2015. This wall is formed when hydrogen from the sun meets gas floating between the stars, and is compacted as our family of planets travels through the galaxy.

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Asteroid 2015 BZ509 may have joined Our Family of Planets from an Alien Solar System

An asteroid orbiting backwards around the Sun may have come from another solar system, according to astronomers in France.
Asteroid 2015 BZ509 is roughly two miles across, and orbits the Sun at roughly the same distance as Jupiter. Computer simulations suggest the object may have joined our planetary family four-and-a-half billion years ago, just as the Earth and other planets were being formed.

Read More Asteroid 2015 BZ509 may have joined Our Family of Planets from an Alien Solar System