[SAPOD]Today’s “Space Image”. We introduce characteristic images introduced by sorae in the past, attractive images released by space agencies of various countries, and images submitted by space astronomy fans and experts. (There is a link to the original article at the end of the article)
(Source: sorae portal site to the universe)
Source
- Image Credit: ESA/Hubble, M. Kornmesser
- sorae – Precise measurement of the inclination of the orbital plane of “55 Cancri e” using a spectrometer
This was introduced by sorae in an article on December 20, 2022.Artist’s impression of the exoplanet “55 Cancri e”“is. On the left side of the image is the main star, 55 Cancri A, which is thought to orbit its main star in less than 18 hours.
Among the more than 5,000 “exoplanets” discovered so far, there are also types of planets that are not found in the solar system. One extreme example is an “ultra-short-period planet” whose orbital period is less than one day. Ultra-short-period planets are only a few million kilometers from their stars, and their surface temperatures can reach several thousand degrees.
Since it is believed that planets cannot form in such high-temperature regions, it is assumed that ultra-short-period planets formed in more distant orbits, and then for some reason their orbits changed to bring them closer to the star. . However, the mechanism is not well understood, and it is not known whether this assumption is correct in the first place.
One such planet is known as 55 Cancri E, which was discovered in 2004. 55 Cancri e is estimated to be a rocky planet with a diameter 1.9 times and 8 times the mass of Earth, but its surface temperature reaches 2500 degrees Celsius, so it is covered in magma. It is estimated that
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