Until just a few decades ago, our knowledge of planetary systems was limited to our own Earth and
the neighboring planets of our solar system.
Not exact matches
All
of which means that Proxima b is far more than the nearest
neighboring planet outside our
solar system.
As the hot Jupiter dashes inward, its gravity ejects any smaller
planets near the star, both explaining the absence
of close planetary
neighbors and suggesting that
solar systems with hot Jupiters are unlikely to host life - bearing worlds resembling Earth.
Picture the
solar system's largest telescope, a telescope as long as the island
of Manhattan, incorporating a lens the size
of a football field: an instrument possessing the resolution to examine earth - like
planets around
neighboring stars light - years away.
One
of those is Kepler - 90i; the second, Kepler - 80g, is the sixth
planet in its
solar system and appears to be precisely aligned orbitally with one
of its
neighbors.
Tents are set up for each
of our
solar system neighbors, including the
planets, the asteroid belt, Pluto and other objects in the farthest reaches.
It speaks to the vastness
of space — and how little we know about it — that a regular Jane or Joe can essentially come across a
planet in a
neighboring solar system.
Studying younger
solar systems such as 51 Eridani will help astronomers understand the formation
of our
neighbor planets, and how common that
planet - forming mechanism is throughout the universe.
Some astronomers have speculated that inner Oort Cloud objects could even be extra-
Solar planets gravitationally captured from
neighboring stars during the formation
of the
Solar System.