- What’s the longest someone has lived in space?
- What was the start of the universe?
- How far does the universe go?
- Is the universe infinite?
- Does space have a smell?
- Who created the universe?
- Will entropy destroy universe?
- Will Earth be consumed by a black hole?
- How many more years will the universe last?
- Are there dead bodies in space?
- Does Infinity exist in reality?
- Where is the end of the universe?
- What’s beyond the universe?
- What will happen in a billion years?
- Has anyone ever floated away in space?
- What happens when you reach the end of space?
- Are there other universes?
- How do you poop in space?
What’s the longest someone has lived in space?
Valery PolyakovRussian cosmonaut Valery Polyakov spent nearly 438 consecutive days aboard the Mir space station, from January 1994 to March 1995.
He therefore holds the record for longest single human spaceflight — and perhaps set another one for wobbliest legs when he finally touched down..
What was the start of the universe?
13.8 billion years agoThe Big Bang was the moment 13.8 billion years ago when the universe began as a tiny, dense, fireball that exploded. Most astronomers use the Big Bang theory to explain how the universe began.
How far does the universe go?
46.5 billion light-yearsThe comoving distance from Earth to the edge of the observable universe is about 14.26 gigaparsecs (46.5 billion light-years or 4.40×1026 m) in any direction. The observable universe is thus a sphere with a diameter of about 28.5 gigaparsecs (93 billion light-years or 8.8×1026 m).
Is the universe infinite?
The universe is unquestionably huge. … The observable universe is still huge, but it has limits. That’s because we know the universe isn’t infinitely old — we know the Big Bang occurred some 13.8 billion years ago. That means that light has had “only” 13.8 billion years to travel.
Does space have a smell?
As it turns out, space actually does have a distinct odor. … Astronauts returning from space claim that their suits smell, in a word, burnt. The lingering scent of space is “acrid” and “metallic,” reminding the astronauts of charred meat or welding fumes.
Who created the universe?
God did not create the universe, the man who is arguably Britain’s most famous living scientist says in a forthcoming book. In the new work, The Grand Design, Professor Stephen Hawking argues that the Big Bang, rather than occurring following the intervention of a divine being, was inevitable due to the law of gravity.
Will entropy destroy universe?
Once entropy reaches its maximum, theoretical physicists believe that heat in the system will be distributed evenly. This means there would be no more room for usable energy, or heat, to exist and the Universe would die from ‘heat death’. Put simply, mechanical motion within the Universe will cease.
Will Earth be consumed by a black hole?
If nothing can escape from a black hole, then won’t the whole universe eventually be swallowed up? … There is no danger of the Earth (located 26,000 light years away from the Milky Way’s black hole) being pulled in.
How many more years will the universe last?
Vacuum decay might already have begun in some distant place. We won’t see it coming. Not to worry, though. As Mack counsels, whatever it looks like, the end probably won’t be nigh for at least 200 billion years.
Are there dead bodies in space?
As of 2020, there have been 15 astronaut and 4 cosmonaut fatalities during spaceflight. Astronauts have also died while training for space missions, such as the Apollo 1 launch pad fire which killed an entire crew of three. There have also been some non-astronaut fatalities during spaceflight-related activities.
Does Infinity exist in reality?
Although the concept of infinity has a mathematical basis, we have yet to perform an experiment that yields an infinite result. Even in maths, the idea that something could have no limit is paradoxical. For example, there is no largest counting number nor is there a biggest odd or even number.
Where is the end of the universe?
Scientists don’t think there is a true edge of the universe. But there’s an end to what humans can see of the universe. This is called the edge of the observable universe. It’s the farthest we can see, based on how we get information from light.
What’s beyond the universe?
Beyond that, there’s a sea of galaxies: perhaps two trillion in total contained in our observable Universe. … That’s what the Big Bang was, the day that the Universe as we know it was born. For a galaxy that’s relatively close by, it’s just about the same age that we are.
What will happen in a billion years?
In about one billion years, the solar luminosity will be 10% higher than at present. This will cause the atmosphere to become a “moist greenhouse”, resulting in a runaway evaporation of the oceans. As a likely consequence, plate tectonics will come to an end, and with them the entire carbon cycle.
Has anyone ever floated away in space?
On February 7, 1984, Bruce McCandless became the first human to float free from any earthly anchor when he stepped out of the space shuttle Challenger and flew away from the ship.
What happens when you reach the end of space?
The expansion starts off fast, and there isn’t enough matter and energy to overcome that initial expansion. The expansion rate drops but never reaches zero; the Universe expands forever and ends in a Big Freeze.
Are there other universes?
Together, these universes comprise everything that exists: the entirety of space, time, matter, energy, information, and the physical laws and constants that describe them. The different universes within the multiverse are called “parallel universes”, “other universes”, “alternate universes”, or “many worlds”.
How do you poop in space?
Today, astronauts at the International Space Station poop into a little plate-sized toilet hole, and a fan vacuum-sucks their excrement away. A separate funnel equipped with a fan suctions their pee away.