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Billions of stars in the same region of the universe are called
expanding
a spiral-shaped formation composed of billions of stars
They may contain billions of stars in a space much larger than our solar system.
planet -- solar system -- galaxy -- universe
Lightyears (LY)
further away from us
galaxies
shift toward the red end of the spectrum
According to Hubbell's law more rapidly moving galaxies are now
expanding
a spiral-shaped formation composed of billions of stars
They may contain billions of stars in a space much larger than our solar system.
planet -- solar system -- galaxy -- universe
Lightyears (LY)
further away from us
galaxies
shift toward the red end of the spectrum
Based on the red-shift data on galaxies, most astronomers infer that the universe is currently
expanding
a spiral-shaped formation composed of billions of stars
They may contain billions of stars in a space much larger than our solar system.
planet -- solar system -- galaxy -- universe
Lightyears (LY)
further away from us
galaxies
shift toward the red end of the spectrum
The unit most used by astronomers to express the distances to other galaxies is
expanding
a spiral-shaped formation composed of billions of stars
They may contain billions of stars in a space much larger than our solar system.
planet -- solar system -- galaxy -- universe
Lightyears (LY)
further away from us
galaxies
shift toward the red end of the spectrum
In which list are celestial features correctly shown in order of increasing size?
expanding
a spiral-shaped formation composed of billions of stars
They may contain billions of stars in a space much larger than our solar system.
planet -- solar system -- galaxy -- universe
Lightyears (LY)
further away from us
galaxies
shift toward the red end of the spectrum
Which statement best describes galaxies?
expanding
a spiral-shaped formation composed of billions of stars
They may contain billions of stars in a space much larger than our solar system.
planet -- solar system -- galaxy -- universe
Lightyears (LY)
further away from us
galaxies
shift toward the red end of the spectrum
The Milky Way galaxy is best described as
expanding
a spiral-shaped formation composed of billions of stars
They may contain billions of stars in a space much larger than our solar system.
planet -- solar system -- galaxy -- universe
Lightyears (LY)
further away from us
galaxies
shift toward the red end of the spectrum
According to the big bang theory, the universe began as an explosion and is still expanding. This theory is supported by observations that the stellar spectra of distant galaxies show a
expanding
a spiral-shaped formation composed of billions of stars
They may contain billions of stars in a space much larger than our solar system.
planet -- solar system -- galaxy -- universe
Lightyears (LY)
further away from us
galaxies
shift toward the red end of the spectrum
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