Theories
Most secular scientists believe that this is the cause of the beginning of the solar system, which is also known as the nebular hypothesis.
What is the Big Bang Theory?
This second-century AD philosopher is most noted for improving and promoting the geocentric theory.
Who was Ptolemy?
This planet has the most rings.
What is Saturn?
Uranus has this unique rotational axis feature.
What is lying on its side?
This is the most well-known dwarf planet.
What is Pluto?
The theory that the earth is the immovable center of the universe and all other celestial objects move around it.
What is the geocentric theory?
This scientist observed that Jupiter's four largest moons revolved around it and not the Earth, which made him accept Copernicus's heliocentric theory.
Who is Galileo?
This planet is the brightest.
What is Venus?
Uranus is named after this mythical god.
What is the Greek sky god?
These small solar system bodies (SSSBs) can range in size from a house to a third of the size of the moon.
What is an asteroid?
According to this Copernican theory, the sun is at the center of the solar system with the earth and other planets orbiting it, and the moon orbiting the earth.
What is the heliocentric theory?
This astronomer discovered that planetary orbits were elliptical rather than perfectly circular.
Who is Kepler?
This planet has the highest density.
What is Earth?
Uranus and Neptune are both known as these.
What are ice giants?
This small solar system body (SSSB) is made of different ices such as ammonia, methane, and carbon dioxide.
What is a comet?
Copernicus questioned the geocentric theory because of this.
What is its complexity?
This scientist used his observation of the moon orbiting the earth to develop his law of gravitation.
Who is Newton?
This planet has 14 moons.
What is Neptune?
This astronomer discovered Uranus in 1781 with an optical telescope.
Who is Sir William Herschel?
Meteors are often called this because when they enter the earth's atmosphere their speed creates a glowing heat.
What is a shooting star?
Copernicus theorized that the earth does this while revolving around the sun.
What is rotates on its axis?
This astronomer built precise instruments in palace-like observatories.
Who is Brahe?
This planet has one of the lowest densities because it is made mainly of lighter elements.
What is Jupiter?
Uranus has this many known moons.
What is 27?
Meteorites often create these when they crash into the earth's surface.
What are impact craters?