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Astronomers have captured first direct evidence that an exoplanet is born



Picture of the new planet. The planet is the bright blobe, and the black circle is a relic of the instrument that blocks the light from the central star.
Image: ESO / A. Müller et al.

By this time we have discovered several thousand exoplanets – there is nothing super exciting about finding a distant star with several worlds surrounding it. But today scientists announce that they have seen an exoplanet in the middle of the formation.

The starboard PDS 70 star was discovered by Very Large Telescope's SPHERE and NAOS-CONICA instruments and Gemini Near-Infrared Coronagraphic Imager, all located in Chile. But after analyzing data from the dust and taking further observations with SPHERE, researchers found what they were looking for: robust evidence of a point in the dust.

"Planets are born in different dishes. These discs are made of gas and dust and surround young stars up to a lifetime of about 10 million years," said research student Miriam Keppler from the Max Planck Institute for Astronomy in Germany to Gizmodo. " The exciting fact of our discovery is that we have an exceptionally robust discovery of a young planet still embedded in such a disc. "

Researchers believed that PDS 70 might have such a protoplanetic disk as early as 1992 and actually saw the disk in 2006. Researchers have continued to investigate this region by 24 February this year. SPHERE blocks the light from the star, enabling researchers to observe the much dimmer dust and planet at several wavelengths. The old and new tasks show the clear presence of one planet and leave a trace behind it. A gap in the disc.

Another analysis estimates that the nasal The tan 2000-degree Fahrenheit planet is somewhere between two and 17 times the mass of Jupiter, with a radius of about 1.4 to 3.7 times Jupiter. It is probably 5.4 million years old and circuits PDS 70 about 22 times the distance from Earth to Sun. It takes 118 earth years for this planet to make a full lane around its star.

Both papers describing the new planet are shown in the journal Astronomy and Astrophysics.

It is important to study these early planets to understand how planets are formed more generally. "The measurement of the spectrum gives us insights on how the atmosphere of the planet looks at a very early stage of life," said Keppler. "This is very important for calibrating theoretical models that assume the characteristics of planets as they evolve."

Of course, this research only reprimands the surface; There are many more planets and protoplanetic floppies to study before we will ever understand the planetary formation process. New telescopes like James Webb Space Telescope and Atacama Large Millimeter / Sub-millimeter Array can potentially help shine light (or in this case block light) on this mysterious cosmic phenomenon.

[Astronomy and Astrophysics 1, 2]
[Astronomy and Astrophysics 1, 2]


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