Kepler space telescope

Kepler space telescope

The Kepler space telescope was launched by NASA to discover Earth-like planets orbiting other stars

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Keywords

Kepler space telescope, space telescope, telescope, Kepler, NASA, planet-hunting, planet, star, space research, astronomy, geography

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Launch date: 03:49 AM, March 7, 2009

Launch site: Cape Canaveral, Florida , USA

Mission costs: ~ $600 million

Orbit: around the Sun

Orbital period: 372.5 days

Diameter of the primary mirror: 1.4 m (4.59 ft)

With the help of the Kepler space telescope, NASA is looking primarily for Earth-sized, potentially habitable exoplanets. The telescope examines a patch of the sky with more than 100,000 stars in the direction of the constellations Cygnus and Lyra.
If there is a planet orbiting a star and the orbital plane of the planet is appropriate, the telescope can detect the planet as it transits in front of the star.
When the planet transits, the apparent brightness of the parent star decreases, and this decrease can be detected by a very sensitive sensor.
The collected data provide information about the planet, for example, its size, distance from the parent star and orbital period. With this method, hundreds of exoplanets are discovered every year.

When a planet transits in front of a star being examined, the star's apparent brightness slightly decreases, which can be detected by a very sensitive sensor. This decrease in brightness is very slight.
For example, when an Earth-sized planet transits in front of a Sun-sized star, the change in brightness can be compared to the change we would detect from kilometers away, when a flea passes in front of a car's headlight.
The collected data provide information about the planet, for example, its size, distance from the parent star and orbital period. With this method, hundreds of exoplanets are discovered every year.

  • - A spherical mirror with a diameter of 1.4 m (4.59 ft). It reflects incoming light in to the sensor.

  • - A spherical mirror with a diameter of 1.4 m (4.59 ft). It reflects incoming light in to the sensor.

Narration

With the help of the Kepler space telescope, NASA is looking primarily for Earth-sized, potentially habitable exoplanets. The telescope was launched on March 7, 2009. It orbits the Sun on an Earth-trailing orbit and examines a relatively small patch of the sky.

Its orbital period is 372.5 days, while the Earth's orbital period is 365.25 days. The telescope is positioned in a way that the sunshade continuously protects the optical system against the Sun.

Light enters the telescope through a corrector lens. The special shape of this lens corrects the spherical aberration in the spherical primary mirror. The primary mirror is a spherical mirror that reflects incoming light into the sensor. Light reaches the curved surface of the sensor without any distortion.

The telescope simultaneously examines more than 100,000 stars in the direction of the constellations Cygnus and Lyra.
If there is a planet orbiting a star and the orbital plane of the planet is appropriate, the telescope can detect the planet as it transits in front of the star. When the planet transits, the apparent brightness of the parent star decreases, and this decrease can be detected by a very sensitive sensor.

The data that is collected provide information about the planet, for example, its size, distance from the parent star and orbital period. With this method, hundreds of exoplanets are discovered every year.

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