HS-ESS1-2

Construct an explanation of the Big Bang theory based on astronomical evidence of light spectra, motion of distant galaxies, and composition of matter in the universe.

More Stories in HS-ESS1-2

  1. Planets

    Analyze This: Some 5,000 planets orbit stars other than our sun

    A new cache of confirmed exoplanet discoveries marks a milestone in planets found beyond our solar system.

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  2. Earth

    Scientists Say: Atmosphere

    An atmosphere is an envelope of gas around a planet, dwarf planet or moon.

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  3. Space

    Scientists Say: Constellation

    Constellations are clusters of related things, especially the stars that form patterns in the night sky — some of which date back to ancient times.

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  4. Planets

    Mercury’s surface may be studded with diamonds

    Billions of years of meteorite impacts may have transformed much of Mercury's graphite crust into precious gemstones.

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  5. Planets

    Let’s learn about Pluto

    Once known as a pipsqueak planet, Pluto is now the solar system’s best known dwarf planet.

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  6. Physics

    Scientists Say: Doppler effect

    The Doppler effect is a perceived change in the frequency of light or sound waves due to the wave source moving relative to an observer.

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  7. Physics

    Scientists Say: Dark Energy

    Dark energy is the unknown force causing the universe to expand faster and faster.

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  8. Space

    Wild art? No, it’s a radio image of the heart of our Milky Way

    Eyelash-like radio filaments accent the brightest feature in this image — a supermassive black hole.

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  9. Planets

    No, organic molecules alone don’t point to life on Mars

    These carbon-based molecules, found in a meteorite, may reflect merely a mixing of water and minerals on the Red Planet over billions of years.

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