thereckless

[thereckless]

Better I remain a small star rather being a massive one and get destroyed by mine own gravitational pull.

Swapna Biswas

[thereckless]

The wormhole theory postulates that a theoretical passage through space-time could create shortcuts for long journeys across the universe. Wormholes are predicted by the theory of general relativity.

Source: Space.com

so, are you ready to fold a paper and send your pen from a side to another [from inside the folded paper]. Yeah, your pen woud be time travelling.

[thereckless]

According to the standard Big Bang model, the universe was born during a period of inflation that began about 13.8 billion years ago. Like a rapidly expanding balloon, it swelled (and stilll expanding) from a size smaller than an electron to nearly its current size within a tiny fraction of a second.

Initially, the universe was permeated only by energy. Some of this energy congealed into particles, which assembled into light atoms like hydrogen and helium. These atoms clumped first into galaxies, then stars, inside whose fiery furnaces all the other elements were forged.

This is the generally agreed-upon picture of our universe's origins as depicted by scientists. It is a powerful model that explains many of the things scientists see when they look up in the sky, such as the remarkable smoothness of space-time on large scales and the even distribution of galaxies on opposite sides of the universe.

But there are things about this story that make some scientists uneasy. For starters, the idea that the universe underwent a period of rapid inflation early in its history cannot be directly tested, and it relies on the existence of a mysterious form of energy in the universe's beginning that has long since disappeared.

For some scientists, inflation is a clunky addition to the Big Bang model, a necessary complexity appended to make it fit with observations. This wouldn't be the last addition.

Steinhardt worries cosmologists are acting more as engineers than scientists. If an observation doesn't match the current model, they attach another component or tinker with existing ones to fit. The components aren't connected and there's no reason to add them except to match observations. It's like trying to fix an old car by adding new parts from newer but different models. Those parts may work in the short term, but eventually, you need a new car.

Source: Live Science