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What are some big discoveries in astronomy?

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What are some big discoveries in astronomy?

Top 10 Greatest Discoveries In Astronomy

  • Cosmic Microwave Background Radiation.
  • Dark Energy.
  • Dark Matter.
  • Exoplanets.
  • Black Holes.
  • General Relativity.
  • Red-shifting of Objects in the Universe.
  • Gamma Ray Bursts.

What are 5 facts about astronomy?

  • 10 Crazy Facts You Didn’t Know About Space.
  • SPACE IS COMPLETELY SILENT.
  • THE HOTTEST PLANET IN OUR SOLAR SYSTEM IS 450° C.
  • A FULL NASA SPACE SUIT COSTS $12,000,000.
  • THE SUN’S MASS TAKES UP 99.86\% OF THE SOLAR SYSTEM.
  • ONE MILLION EARTHS CAN FIT INSIDE THE SUN.
  • THERE ARE MORE TREES ON EARTH THAN STARS IN THE MILKY WAY.

What are the 4 types of astronomy?

We can divide astronomy into 4 sub-fields:

  • ASTROPHYSICS: Applying the laws of physics in space.
  • ASTROMETRY: Mapping celestial bodies.
  • ASTROGEOLOGY: Examining rocks, terrain and material in space.
  • ASTROBIOLOGY: Searching for life outside Earth.
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What are 5 famous astronomers?

The Most Famous Astronomers of All Time

  • The Most Famous Astronomers of All Time. Karl Tate, SPACE.com.
  • Claudius Ptolemy. Bartolomeu Velho, Public Domain.
  • Nicolaus Copernicus. Public Domain.
  • Johannes Kepler. NASA Goddard Space Flight Center Sun-Earth Day.
  • Galileo Galilei. NASA.
  • Isaac Newton.
  • Christiaan Huygens.
  • Giovanni Cassini.

How many mysteries are there in astronomy?

There have always been, and, let’s go as far as to say that there always will be, mysteries in astronomy. Although the nature of the mysteries may change, the total number is always going up.

What did astronomers not know a century ago?

Just a century ago, astronomers weren’t sure what galaxies were (islands of stars), or how the Sun generated energy (nuclear fusion). And just a few decades ago, we didn’t know what caused quasars (feeding supermassive black holes), or how old the Universe was (13.8 billion years).

How many light years away is the universe?

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We can see light that left shortly after the Big Bang, 13.8 billion years in all directions. And the expansion of the Universe has carried these regions more than 45 billion light-years away from us. But the Universe is probably much larger than that, and may be even infinite.

How many unanswered questions are there in astronomy?

There are hundreds, thousands, millions of unanswered questions. The more we learn, the more we discover how little we actually understand. Whenever we do a video about concepts in astronomy where we have a basic understanding, like gravity, evolution, or the Big Bang, trolls show up and say that scientists are so arrogant.