Can we reach the edge of the universe with a spaceship flying one light year per second? How long will it take to arrive?

Tech 2023-10-05 21:53:44 Source: Network

We used to think that the world was small and the Earth was the center of the universe. But now we know,The Earth is very small in the universe, it is just a planet revolving around the sun

We used to think that the world was small and the Earth was the center of the universe. But now we know,The Earth is very small in the universe, it is just a planet revolving around the sun.

There are hundreds of billions of stars in the Milky Way alone, and there are many, many galaxies like the Milky Way in the universe. The size of the universe is truly beyond the imagination of many people!

Currently,The speed of light is the fastest known speed in the universe, approximately 300000 kilometers per secondThe speed of all objects in motion must be less than the speed of light, as if it were set. What can the speed of light in one second do?

In one second, light can circle the Earth 7.5 timesThe cup length is several times longer than the annual sales of a certain milk tea you drink. The fastest instrument ever produced by humans is the Parker Solar Probe.

When the Parker solar probe orbits the sun and is influenced by its gravity, it can only reach a speed of 200 kilometers per second, which is only 1500 times the speed of light.

Looking at it this way, the speed of light is already fast enough, but it is only relative to humans.When the speed of light faces the vastness of the universe, it appears powerless.

To figure out how long it takes a spaceship of one light year per second to reach the edge of the universe, one can first calculate it from speed.A light year is a unit of distance, with a distance of approximately 9.46 trillion kilometers per light year.The radius of the solar system is approximately one light-year.

The detectors currently launched by humans outside the solar system arePioneer 10, Pioneer 11, Voyager 1, Voyager 2, and New Horizons. It's just that the speed is too slow,Until now, humans have not yet emerged from the solar system, and they are still trapped within a light year of space.

After understanding the basic speed, we can start flying. When the spacecraft flies one light year per second, we reach the outer edge of the solar system in one second.

Currently,There are two definitions of the edge of the solar system. The first type isOutside the heliosphereThat's the edge where the Voyager Explorer flew out. The second type is in theBeyond the gravitational range of the sun, i.e. beyond the Oort cloud. It took us a second to fly to the vicinity of the Oort Cloud, and we are about to truly break out of the solar system.

After flying out of the solar system,Another 3.22 seconds to reach the vicinity of the neighboring star in Centaurus aIt is the closest star to the solar system.In eight seconds, we will be able to see the brightest star in the sky, which is SiriusAt this moment, it is in front of us, and the difference from when we look up and observe on Earth is still very significant.

In 40 seconds, we can see the 55E star in CancerIt is about the same size as Neptune in the solar system, but it is a place rich in oil,The ground is covered in diamondsIf you could get there, would you bring some diamonds with you?

After a 10 minute flight, we arrived at Kepler 22B, which NASA has recognized as the most Earth like star to date.It is 85% similar to EarthIf there were an atmosphere here, perhaps you would become the first human to see extraterrestrial life.

It has been almost 2 hours since we set off from Earth, and we have arrived at the magnificent Crab Nebula,It is a supernova remnant and pulsar wind nebula located northeast of Taurus, and is currently the most stable radiation source that humans can detect. It is constantly expanding at a speed of 1500 kilometers per second.

After six hours of travel, we arrivedGalaxyEdge ofGalaxy

GalaxyGalaxy22

Currently,Galaxy40Galaxy. However, within such a long period of time, it is unclear where human civilization will go, and it needs to have already moved away from Earth.

Next, we will continue to traverse various galaxies of all sizes,If you can live from your departure to the 100th year of space travel, you will reach a particularly large quasar, TON168, with a brightness 660 times that of the sun.

After flying for 1458 years, we finally reached the theoretical edge of the universe, which is approximately 46.5 billion light-years away from Earth, but this is only the known and observable edge of the universe for humans.

During your flight, the universe is also constantly expanding, and even the edge of the universe that humans are currently observing is simply an illusion. Beyond the universe, it may still be the universe. It can be imagined how big the universe is, and how small humans seem in the universe. However, this cannot stop our exploration of outer space, and countless scientists are striving for it.

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