Monday, October 11, 2021 08:15 AM (GMT+7)
While Pluto – “the 9th planet” from NASA’s point of view” passed a bright star as seen from Earth, US scientists discovered that it was losing its atmosphere.
The discovery has just been presented by the Southwest Research Institute (SwRI – USA) at the 53rd Annual Meeting of the American Astronomical Society on Planetary Science.
According to Sci-News, while observing Pluto as it happened to pass “in front of” a star as seen from Earth, scientists noticed condensation in a nitrogen-rich atmosphere. of the dwarf planet.
The fragile and beautiful atmosphere of the “9th planet” – Photo: NASA/Johns Hopkins University/Southwest Research Institute
Condensation means that nitrogen in the atmosphere is no longer a gas but gradually condenses on the surface, turning into ice. The phenomenon occurs when Pluto moves away from the Sun in its elliptical orbit.
This fits with a mystery that’s been debated for a few years now: NASA’s New Horizons mission obtained an amazing set of data from its 2015 flight showing that Pluto’s atmospheric mass doubles every decade. century, but by 2018 it was no longer seen. Simply because its atmosphere is gradually disappearing.
Pluto has actually moved away from the sun over the past quarter century, but according to team member Dr Leslie Young, the phenomenon of “thermal inertia” has helped the atmosphere continue to increase before entering the reverse transformation. “thermal inertia” is like sea sand absorbing sunlight: the time when it is hottest is not when the sun is most intense, but a while later, due to the amount of “condensed” heat absorbed, after that’s slowly cooling down.
Thus, 2018 is a transition period when the process of evaporating nitrogen ice thickening the atmosphere reaches its peak and stops; the nitrogen phase in the air turns back into ice.
Pluto takes 248 Earth years to complete one revolution around the sun, so it is extremely valuable for our generation to witness that transition, providing a new turning point for the study of the mysterious dwarf planet. this hidden.
Pluto was “demoted” from planet 9 to a dwarf planet by the International Astronomical Union (IAU) in 2006; However, in recent years NASA has continuously issued statements and studies showing that it is necessary to restore the planetary state for this object, even suggesting that it is likely to be a habitable planet.
British scientists have used X-rays, artificial intelligence (AI) and 3D printing techniques to recreate a mysterious nude woman…