Scientists believe that Sun started its life about

  • 5,000 years ago
  • 5 million years ago
  • 5 billion years ago
  • 5 trillion years ago

Old constellation names refer to the areas of sky instead of

  • animals
  • heroes
  • heroines
  • mythical figures

The smaller stars live for much

  • longer period
  • shorter period
  • both a and b
  • lesser period

Contemporary, sun to the stage of red supergiant, it would take approximately

  • 10 years
  • thousands of years
  • millions of years
  • zillions of years

The stars in a spiral galaxy are

  • old age, middle age and young
  • yellow stars, blue giants and red super giants
  • orange stars, red giants and blue supergiants
  • dwarfs, giants and super giants

After turning of sun into red supergiant, the outer layers of sun will start turning into

  • discs of gases
  • balls of dust
  • clouds of gases
  • clouds of asteroids

The temperature of surface of sun is

  • 1000 °C
  • 2500 °C
  • 4000 °C
  • 5500 °C

Astronomers search black holes

  • directly
  • indirectly
  • using satellites
  • using space probes

Stars of a constellation look close together. Infact they are on immense

  • distances
  • horizons
  • paths
  • sphere

The sun is the center of the

  • galaxies
  • milky way
  • universe
  • solar system

The diameter of Sirius-A is

  • 1.5 times of the Sun
  • 1.8 times of the Sun
  • 2.3 times of the Sun
  • 2.5 times of the Sun

Almost half of the sun's hydrogen has been converted into

  • helium
  • nitrogen
  • oxygen
  • xenon

The distance that light travels in one year is known as

  • approximate distance
  • star speed
  • light year
  • sound year

The stars we see in a dark night are

  • hundreds of miles away
  • thousands of miles away
  • millions of miles away
  • zillions of miles away

Compared to an optical telescope, the radio telescope should be

  • small in size
  • same in size
  • large in size
  • tiny in size

The distance between Sirius and Earth is about

  • 6 light years
  • 9 light years
  • 12 light years
  • 120 light years

Some constellations can be seen around the year, they circle around the sky never sinking below the

  • planets
  • horizon
  • vertex
  • sky

A black hole is more dense than a

  • white dwarf
  • neutron star
  • yellow star
  • red supergiant

By Sirius B, Sirius A is orbited every

  • 30 years
  • 40 years
  • 50 years
  • 60 years

The telescope that makes a far off object bigger is known as

  • Radio telescope
  • Reflecting telescope
  • Refracting telescope
  • Hubble telescope

More constellations were discovered when people drew maps of

  • horoscopes
  • sky during daytime
  • sky during night
  • celestial bodies

A neutron star weighs more than

  • Moon
  • Sun
  • Comet
  • Earth

The average distance between each star is about

  • 2 light years
  • 3 light years
  • 4 light years
  • 5 light years

A dish is faced towards sky to focus and collect

  • energy
  • waves
  • power
  • current

The world's most famous telescope is

  • Spitzer Space Telescope
  • Fermi Gamma-Ray Space Telescope
  • Arecibo Telescope
  • Hubble Telescope

In 1930, astronomers divided sky into

  • 66 areas
  • 77 areas
  • 88 areas
  • 99 areas

Neutron stars are much denser than

  • red super giants
  • blue giants
  • white dwarfs
  • yellow stars

In Hubble telescope a computer combines information provided by the separate

  • aerials
  • dishes
  • radio waves
  • wavelengths

Asteroids are rocky, airless worlds that orbit our sun but are too small to be called

  • stars
  • planets
  • both a and b
  • celestial bodies

The sun is too close to earth, this is why it looks

  • yellow
  • small
  • large
  • orange
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