What is an exoplanet?
An exoplanet is a planet that lies beyond our solar system.
Is There Life on Exoplanets?
We have currently not found evidence of life on any planet besides Earth, including exoplanets.
Exoplanets yield great potential for harboring life, but we have not found any evidence of life on planets beyond Earth. The following article describes some of the reasons why we have not found life and the techniques and methods used to do so.
How Are Exoplanets Detected?
Exoplanets are detected using a variety of methods. The transit, radial velocity, direct imaging, and indirect observation methods. These methods allow us to detect and observe exoplanets based on their position and other properties.
The following article describes these methods more in-depth and some of the drawbacks and benefits for each respective method and why some exoplanets remain undiscovered.
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The transit method works by observing a preselected study of stars for any periodical reduction in observed brightness. If this reduction is observed in any of the selected stars, it is possible that the star's observable brightness is being reduced by a planet passing in front of it.
Doppler Spectroscopy(Radial Velocity Method)
The transit method is an indirect method for finding exoplanets and brown dwarfs from radial-velocity measurements of Doppler shifts in the spectrum of the planet's parent star.
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