Space Facts
Space is amazing. The
sheer vastness of it, along with the trillions upon trillions of objects in the
many billion galaxies of the universe is almost incomprehensible to the human
brain.
This page is a
continuously updated list of the most incredible, awe-inspiring and
unbelievable facts about space. Whether it’s for kids looking to learn more
about space, or you’re looking for incredible facts for an article, or even if
you just love space facts for no real reason, this is for you.
1. Space is completely silent.
There
is no atmosphere in space, which means that sound has no medium or way to
travel to be heard. Astronauts use radios to stay in communication why in
space, since radio waves can still be sent and received.
2. The hottest planet in our solar system
is 450° c.
Venus
is the hottest planet in the solar system and has an average surface
temperature of around 450° C. Interestingly, Venus is not the closest planet to
the Sun – Mercury is closer but because Mercury has no atmosphere to regulate
temperature it has a very large temperature fluctuation.
3. There may be life on mars.
Of
all the planets in our solar system (apart from Earth), Mars is the one most
likely to be hospitable to life. In 1986, NASA found what they thought may be
fossils of microscopic living things in a rock recovered from Mars.
4. Nobody knows how many stars are in
space.
The
sheer size of space makes it impossible to accurately predict just how many
stars we have. Right now, scientists and astronomers use the number of stars
only within our galaxy, The Milky Way, to estimate. That number is between
200-400 billion stars and there are estimated to be billions of galaxies so the
stars in space really are completely uncountable.
5. Halleys comet won’t orbit past earth
again until 2061.
Discovered
in 1705 by Edmond Halley, the famous comet was last seen in 1986 and is only
seen once every 75 to 76 years.
6. A full nasa space suit costs
$12,000,000.
While
the entire suit costs a cool $12m, 70% of that cost is for the backpack and
control module.
7. Neutron stars can spin 600 times per
second.
Neutron
stars are the densest and tiniest stars in the known universe and although they
only have a radius of about 10 km (6 mi), they may have a mass of a few times
that of the Sun. They can rotate at up to 60 times per second after they are
born from a core-collapse supernova star explosion and have been known to spin
as fast as 600-712 times per second because of their physics.
8. There may be a planet made out of
diamonds.
As
space facts go, this is pretty impressive. Research by Yale University
scientists suggests that a rocky planet called 55 Cancri e — which has a radius
twice Earth’s, and a mass eight times greater – may have a surface made up of
graphite and diamond. It’s 40 light years away but visible to the naked eye in
the constellation of Cancer.
9. The footprints on the moon will be
there for 100 million years.
The
Moon has no atmosphere, which means there is no wind to erode the surface and
no water to wash the footprints away. This means the footprints of the Apollo
astronauts, along with spacecraft prints, roverprints and discarded material,
will be there for millions of years.
10. One day on venus is longer than one
year.
Venus
has a slow axis rotation which takes 243 Earth days to complete its day. The
orbit of Venus around the Sun is 225 Earth days, making a year on Venus 18 days
less than a day on Venus.
11. In 3.75 billion years the milky way
and andromeda galaxies will collide.
The
Andromeda Galaxy is approaching the Milky Way – where our solar system is – at
rate of around 110 kilometres per second (68 mi/s) and eventually the two will
collide to form a giant elliptical galaxy.
12. If two pieces of the same type of
metal touch in space they will permanently bond.
This
incredible fact is also known as cold welding and it happens because the atoms
of two pieces of metal have no way of knowing they are separate. This doesn’t
happen on Earth because of the air and water found between the pieces.
13. There is floating water in space.
Astronomers
have found a massive water vapor cloud which holds 140 trillion times the mass
of water in the Earth’s oceans somewhere around 10 billion light years away –
making it the largest discovery of water ever found.
14. The largest known asteroid is 965
km (600 mi) wide.
Discovered
by Italian astronomer Giuseppe Piazzi in 1801, the dwarf planet Ceres was the
first, and largest, object to be considered an asteroid. It is located in the
Asteroid Belt between the orbits of Mars and Jupiter and accounts for 33% of
the entire belt’s mass.
15. The moon was once a piece of the
earth.
The
theory is that when Earth was a relatively young planet, it was struck by a
giant object and this collision broke a piece of the Earth away. This piece
then began to orbit the Earth as a result of its gravitational pull.
16. The sun’s mass takes up 99.86% of
the solar system.
Made
of three quarters hydrogen and helium for most of its remaining mass, the Sun
accounts for 99.86% of the mass in our solar system with a mass of around
330,000 times that of Earth.
17. There is a volcano on mars three
times the size of everest.
At
600 km wide and 21 km high, Olympus Mons is a volcano on Mars that may still be
active, according to scientists. It is the tallest peak of any planet. However,
the Rheasilvia central peak on the asteroid Vesta is taller at 22 km.
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