Space physics

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7 Terms

1
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Redshift

increase in wavelength from distant galaxies; evidence of universe expansion.

2
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CMBR

leftover radiation from the Big Bang

3
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Life cycle of stars

nebula → protostar → main sequence → red giant / supernova etc.

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Orbital speed

depends on radius and mass of object being orbited.

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v

2*pi*r/T— orbital speed

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Describe the life cycle of a star larger than our sun.

  • Nebula → Protostar → Main sequence

  • Star expands to red supergiant

  • Supernova

  • Then becomes neutron star or black hole

✅ Must mention: red supergiant, supernova, neutron star/black hole.

7
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How does redshift support the Big Bang theory?

  • Light from distant galaxies is redshifted → they're moving away

  • More distant = more redshift = faster

  • Implies universe is expanding

  • This supports idea that everything started from a single point (Big Bang)

✅ Must mention expansion, speed vs distance, origin.