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Johannes Kepler knew of six planets: Mercury, Venus, Earth, Mars, Jupiter, and Saturn.

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Johannes Kepler only knew about the six planets visible to the naked eye: Mercury, Venus, Earth, Mars, Jupiter, and Saturn. He did not have knowledge of any other planets beyond these at the time.

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Q: How many planets did Kepler know about?
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Related questions

What is the diameter of the planet kepler?

There are lots of planets in the Kepler series. To answer your question, we need to know to which number Kepler you are asking about.


Is there a planet called Kepler?

No. There are, however, many planets discovered by a spacecraft called Kepler and given designations such as Kepler-69c.


How many planets do Kepler's laws work for?

All of them.


How did Kepler the planet get its name?

There is no planet named Kepler. There are, however, many planets with designations such as Kepler-22b. These planets are named as such because they were discovered using the Kepler spacecraft. The spacecraft is named after Johannes Kepler, a 16th-17th century astronomer who defined the laws of planetary motion.


Did Johannes Kepler discover Kepler planets?

No, Johannes Kepler is best known for describing the laws that dictate how orbits work. The Kepler planets were discovered by the Kepler telescope, a spacecraft named in his honor.


Is Kepler a planet?

No. Kepler is a telescope created to find planets orbiting other stars. Planets found using it are given designations beginning with Kepler, such as Kepler 440b.


Did Kepler say that it was the pull of the suns gravity that kept the planets in orbit?

No. Kepler proposed that some force kept the planets in orbit, but did not know or say what that force was. It was Isaac Newton who figured out that this force is gravity.


What planet is Kepler most alike?

There is no Planet Kepler. The Kepler telescope was built to find planets in other solar systems. Planets it finds are given designations such as Kepler-62e. The telescope has found hundreds of planets with a wide range of characteristics.


Why are the new planets called Kepler?

The new planets are named after the Kepler Space Telescope, which was a NASA mission that searched for exoplanets using the transit method. The telescope discovered thousands of exoplanets during its mission.


How much water does the planets have?

There is no single planet named Kepler; rather Kepler is a prefix added to the designations of planets discovered by the Kepler telescope. Several planets discovered by Kepler, including Kepler-438b, Kepler-442b, Kepler 440b, and Kepler 296f, orbit in the habitable zones of their stars, which means they might have liquid water on their surfaces. Currently we do not have the technology to determine if they actually have liquid water.


How was the planet Kepler 22b named?

Kepler-22b was given its the designation Kepler as it is one of many planets discovered by the Kepler observatory. The 22b refers to it being the innermost (and only known) planet orbiting the star Kepler-22.


How many moons does Kepler 62e have?

We don't know if it has any moons. We currently do not have the technology to detect moons orbiting planets outside of our solar system.