Americans and Europeans astronomers first discovered a fully “newborn” exoplanet 395 light-years from Earth, which may be the youngest planet ever found in galaxy us.

Researchers led by Associate Professor Jehan Bae from the University of Florida and the US National Radio Astronomy Observatory (NRAO), who published a corresponding publication in the astrophysical journal The Astrophysical Journal Letters, made the discovery using the ALMA telescope (Atacama). Large millimeter/submillimeter array) in Chile.

A very young exoplanet, which is still “under construction” because it is inside a disk of primordial matter (gases and dust) surrounding its star, appears to be the size of Jupiter. It orbits the also young star AS 209 in the constellation of Ophiuchus, which is only 1.6 million years old, so its planet will be even younger, perhaps 1.5 million years (for comparison, the Earth is about 4.5 billion years old).

The exoplanet was at an unexpectedly large distance from its star, about 200 times the distance from Earth to the Sun. Astronomers cannot explain how such a young star is able to support such a large planet at such a great distance. The planet will be the future target of the powerful new American space telescope James Webb Space Telescope in order to calculate the mass and chemical composition of its atmosphere.

Over the past 30 years, astronomers have confirmed the existence of more than 5,000 exoplanets, and many more are waiting to be confirmed by new observations.

^{Source: APE-MEB}