Approximately 170 billion (1.7 × 10<sup>11</sup>) to 200 billion (2.0 × 10<sup>11</sup>) galaxies exist in
the observable universe. Most of the galaxies are 1,000 to...
May 4, 2009 ... And our Solar System is just one member of a vast Milky Way galaxy ... Most of
the galaxies in the Universe are probably tiny dwarf galaxies.
Apr 1, 2014 ... Astronomers say there are 100 billion to 200 billion galaxies in the universe. But
accurately counting the number of galaxies depends on ...
May 22, 2015 ... A newfound galaxy 12.5 billion light-years from Earth is the most luminous one
known in the universe, blazing more brightly than 300 trillion ...
A planet is a spherical ball of rock and/or gas that orbits a star. Our solar system has 8 planets; in order of increasing average distance from the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. It states, "A 'planet' is defined as a celestial... More »
Jul 18, 2014 ... Scientists estimate how many galaxies there are in the observable universe by
counting up the number of galaxies in a tiny bit of the sky, and ...
Oct 14, 2015 ... Universe Galaxies-1 Milky Way Artist's Conception - The Milky Way Where are
we? We live in a somewhat remote arm of the Milky Way.
Many people are not clear about the difference between our Solar System, our
Milky Way Galaxy, and the Universe. Let's look at the basics. Our Solar System ...
... to gigantic groups known as galaxies. The Sun is one of at least 100 billion
stars in our galaxy, the Milky Way. And there are billions of galaxies in the
Galaxies are sprawling space systems composed of dust, gas, and countless
stars. The number of galaxies cannot be counted—the observable universe