But its exact nature just outside our solar system has been largely a mystery, principally because the Sun, all eight planets and a distant disc of debris known as
the Kuiper Belt
, are all contained within a giant protective bubble formed by the solar wind, known as the .
Which body is outside of the solar system?
The
Kuiper Belt
shouldn't be confused with the Oort Cloud, which is a much more distant region of icy, comet-like bodies that surrounds the solar system, including the Kuiper Belt. Both the Oort Cloud and the Kuiper Belt are thought to be sources of comets.
What is beyond our solar system?
Exoplanets
are planets beyond our own solar system. Thousands have been discovered in the past two decades, mostly with NASA's Kepler Space Telescope. … The planet is also in the star's habitable zone, just 4.7 million miles (7.5 million kilometers) from its host star.
What is outside our universe?
Outside the bounds of our universe may lie
a “super” universe
. … Another theory is that we are creating space as our universe expands. Outside this expansion lies a higher dimensional space-time universe which we are unfolding into. Since it is higher dimension, we cannot see, detect it, or comprehend it.
How old is our galaxy?
Astronomers believe that our own Milky Way galaxy is
approximately 13.6 billion years old
. The newest galaxy we know of formed only about 500 million years ago.
How many galaxies are in space?
While NASA previously determined that there were around
two trillion galaxies
in the universe, new findings say the number is more likely hundreds of billions. While NASA previously determined that there were around two trillion galaxies in the universe, new findings say the number is more likely hundreds of billions.
Where is Earth in our galaxy?
Earth is located
in one of the spiral arms of the Milky Way (called the Orion Arm)
which lies about two-thirds of the way out from the center of the Galaxy. Here we are part of the Solar System – a group of eight planets, as well as numerous comets and asteroids and dwarf planets which orbit the Sun.
Where is Voyager 1 now?
NASA's Voyager 1 spacecraft is currently
over 14.1 billion miles from Earth
. It's moving at a speed of approximately 38,000 miles per hour and not long ago passed through our solar system's boundary with interstellar space.
What planet is closest to the Sun?
Mercury
. Mercury—the smallest planet in our solar system and closest to the Sun—is only slightly larger than Earth's Moon. Mercury is the fastest planet, zipping around the Sun every 88 Earth days.
Does the universe have an end?
The end result is unknown
; a simple estimation would have all the matter and space-time in the universe collapse into a dimensionless singularity back into how the universe started with the Big Bang, but at these scales unknown quantum effects need to be considered (see Quantum gravity).
Can we see Edge of universe?
The edge of the Universe, as it appears to us, is unique to our perspective;
we can see back 13.8 billion years in time in all directions
, a situation that depends on the spacetime location of the observer who's looking at it.
How many universes are there?
There
are still some scientists who would say, hogwash. The only meaningful answer to the question of
how many universes there
are is one, only one
universe
.
What is the oldest thing in the universe?
Astronomers have found the farthest known source of radio emissions in the universe: a galaxy-swallowing supermassive black hole.
How old is our Earth?
Earth is estimated to be
4.54 billion years old
, plus or minus about 50 million years. Scientists have scoured the Earth searching for the oldest rocks to radiometrically date. In northwestern Canada, they discovered rocks about 4.03 billion years old.
How old is space?
Scientists' best estimate is that the universe is
about 13.8 billion years old
.
Which is the largest galaxy in the universe?
The Biggest of the Big
Located almost a billion light-years away,
IC 1101
is the single largest galaxy that has ever been found in the observable universe.
