Question

$\huge\bold{\underline{\underline{{Konnichwa}}}}$
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Time travel to the past is theoretically possible in certain general relativity spacetime geometries that permit traveling faster than the speed of light, such as cosmic strings, transversable wormholes, and Alcubierre drives.

Although humans can't hop into a time machine and go back in time, we do know that clocks on airplanes and satellites travel at a different speed than those on Earth.

We all travel in time! We travel one year in time between birthdays, for example. And we are all traveling in time at approximately the same speed: 1 second per second.

NASA's space telescopes also give us a way to look back in time. Telescopes help us see stars and galaxies that are very far away. It takes a long time for the light from faraway galaxies to reach us. So, when we look into the sky with a telescope, we are seeing what those stars and galaxies looked like a very long time ago.

However, when we think of the phrase "time travel," we are usually thinking of traveling faster than 1 second per second. That kind of time travel sounds like something you'd only see in movies or science fiction books. Could it be real? Science says yes!

More than 100 years ago, a famous scientist named Albert Einstein came up with an idea about how time works. He called it relativity. This theory says that time and space are linked together. Einstein also said our universe has a speed limit: nothing can travel faster than the speed of light (186,000 miles per second).

For example, there was an experiment that used two clocks set to the exact same time. One clock stayed on Earth, while the other flew in an airplane (going in the same direction Earth rotates).

After the airplane flew around the world, scientists compared the two clocks. The clock on the fast-moving airplane was slightly behind the clock on the ground. So, the clock on the airplane was traveling slightly slower in time than 1 second per second.

Yes, time travel is indeed a real thing. But it's not quite what you've probably seen in the movies. Under certain conditions, it is possible to experience time passing at a different rate than 1 second per second. And there are important reasons why we need to understand this real-world form of time travel.


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Answer 1

Can we really time travel to the past but I can't make this time travel machine I need a sciencetist

the day my sis in Brainly will become sciencetist and make time travel machine hope I could meet my grandmother soon ...... it is bit childish but still my thinking is like this .....

Answer 2

KONNICHWA

চকচকে: একটি উজ্জ্বল, চকচকে প্রতিবিম্বিত আলো দিয়ে জ্বলুন।

বন্য: প্রাকৃতিক পরিবেশে জীবিত বা বর্ধমান; গৃহপালিত বা চাষযোগ্য নয়।

ঝাঁকুনি: (আলোর বা আলোর উত্স) অবিচলিতভাবে জ্বলে; উজ্জ্বলতায় দ্রুত পরিবর্তিত হয়।

চারপাশে: একটি দুর্দান্ত অনেক ক্ষমতা বা ব্যবহার রয়েছে; বহুমুখী।

I don't know bengali that perfect

but hope this helps you.

pls mark as brainliest.