Five SCiENCE "FACTS" that are Widely Believed...but WRONG!
Arvin Ash・16 minutes read
Gravity is present in space, with the sun and Earth exerting gravitational effects even in space, extending infinitely albeit traveling at the speed of light. The Big Bang Theory explains the universe's transformation from a denser, hotter state to its current vastness, supported by evidence such as an expanding universe, uniform microwave radiation, and a hydrogen-helium ratio.
Insights
- Gravity is a fundamental force present everywhere in space, exerted by celestial bodies like the sun and Earth, affecting objects within reach.
- The Big Bang Theory is a well-supported explanation for the universe's evolution, detailing the transformation from a dense, hot state to its current vast form, supported by evidence like an expanding universe and uniform microwave radiation.
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Recent questions
What is the Big Bang Theory?
The Big Bang Theory explains the formation of protons and neutrons, their fusion into atoms, and the growth of the universe from a small size to its current vast state. It is supported by evidence and is considered the best theory tracing the universe's evolution from its early stages to the present. The theory predicts an expanding universe, uniform microwave radiation, and a hydrogen-helium ratio, all of which are observed in the universe, providing strong evidence for the occurrence of the Big Bang.
How do bees fly?
Bees can fly due to their unique wing movement generating lift in both forward and backward strokes, unlike birds. This distinctive motion allows bees to create the necessary lift to stay airborne and navigate their surroundings efficiently.
What is the impact of gravity in space?
Gravity is present everywhere in space, as per Newton's law of universal gravitation, with the sun and Earth exerting gravitational effects even in space. Astronauts on the International Space Station experience almost the same gravity force as on Earth's surface due to their mass and orbital motion. Gravity's effects extend infinitely but travel at the speed of light, affecting everything within reach.
How did humans evolve?
Humans didn't evolve from chimpanzees but share a common ancestor, evident in the 98.8% DNA similarity with chimps. Evolution is a well-established scientific theory, observable in various populations, like dark tree frogs in Chernobyl adapting to radiation. The process of evolution involves gradual changes in species over time, leading to the diversity of life forms we see today.
Can anything travel faster than light?
Physics doesn't limit the speed of light; massless particles move at light speed, while massive objects can't reach it due to infinite energy requirements. Information can't surpass light speed to maintain causality, although space-time can expand faster than light speed. While light's group velocity can exceed light speed, the leading edge of the pulse, carrying information, moves at light speed.
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Summary
00:00
"Gravity, Light Speed, Evolution, and Bees"
- Gravity is present everywhere in space, as per Newton's law of universal gravitation, with the sun and Earth exerting gravitational effects even in space.
- Astronauts on the International Space Station experience almost the same gravity force as on Earth's surface due to their mass and orbital motion.
- Gravity's effects extend infinitely but travel at the speed of light, affecting everything within reach.
- Physics doesn't limit the speed of light; massless particles move at light speed, while massive objects can't reach it due to infinite energy requirements.
- Information can't surpass light speed to maintain causality, although space-time can expand faster than light speed.
- Light's group velocity can exceed light speed, but the leading edge of the pulse, carrying information, moves at light speed.
- Bees can fly due to their unique wing movement generating lift in both forward and backward strokes, unlike birds.
- Humans didn't evolve from chimpanzees but share a common ancestor, evident in the 98.8% DNA similarity with chimps.
- Evolution is a well-established scientific theory, observable in various populations, like dark tree frogs in Chernobyl adapting to radiation.
- The Big Bang Theory doesn't explain the universe's creation but describes the transformation from a denser, hotter state to the current universe.
15:25
"Big Bang Theory: Universe's Evolution Explained"
- The Big Bang Theory explains the formation of protons and neutrons, their fusion into atoms, and the growth of the universe from a small size to its current vast state. It is supported by evidence and is considered the best theory tracing the universe's evolution from its early stages to the present. The theory predicts an expanding universe, uniform microwave radiation, and a hydrogen-helium ratio, all of which are observed in the universe, providing strong evidence for the occurrence of the Big Bang.
