Venus can be disturbed today, if not for Jupiter


Venus can be disturbed today, if not for Jupiter

Composite of images taken by Akatsuki, the Japanese spacecraft of Venus. Sincerely: JAXA / ISAS / DARTS / Damia Bouick

According to new UC Riverside research, Venus could not be a waterless, waterless hell today if Jupiter had not changed its orbit around the Sun.


Jupiter has a mass that is two and a half times larger than all other planets in our solar system. Because it is comparatively huge, it has the potential to disturb the orbits of other planets.

Early in the formation of Jupiter as a planet, it moved away from the Sun and then away due to its interaction with the disk from which the planets as well as other giant planets are formed. This movement in turn affected Venus.

Observations from other planetary systems have shown that similar massive planetary escapes may be a relatively common occurrence soon after formation. Among the findings of a new study published in Journal of Planetary Science.

Scientists believe that liquid water deficient planets should be unable to host life as we know it. Although Venus may lose water quickly for other reasons, and may continue to do so anyway, UCR astronomer Stephen Kane stated that Jupiter’s motion triggered Venus on a path toward its current, inhuman state.

“One interesting thing about today’s Venus is that its orbit is almost completely spherical,” said Kane, who led the study. “With this project, I wanted to find out if the orbit has always been spherical and if not, what are its implications?”

To answer these questions, Kane created a model that mimicked the solar system, calculating the location of all the planets at any given time and how they pulled each other in different directions.

Venus can be disturbed today, if not for Jupiter

The animation depicts the singularity of the inner planetary orbits, and shows how spherical the Venus orbit is. Sincerely: ChongChong He

Scientists measure how much the value of a planet’s orbit is less than 0, which is completely spherical, and 1, which is not spherical. A number between 0 and 1 is called the eccentricity of the class. An orbit with an eccentricity of 1 will not even complete an orbit around a star; It will only launch in space, Kane said.

Currently, Venus’s orbit is measured at 0.006, which is the most spherical of any planet in our solar system. However, Kane’s model suggests that when Jupiter was close to the sun about a billion years ago, Venus likely had a fad of 0.3, and that there was a high probability that it was habitable then.

“As Jupiter migrated, Venus would undergo dramatic changes in climate, then warming and cooling and losing its water in the atmosphere,” Kane said.

Recently, scientists created a lot of excitement by searching for a gas in the clouds above Venus that could indicate the presence of life. The gas, phosphine, is usually produced by microbes, and Kane says it is possible that the gas “represents the last living species on a planet that went through a dramatic change in its atmosphere.”

However, for this to happen, Kane noted the microorganisms to maintain their presence in sulfuric acid clouds above Venus for nearly a billion years, since Venus had surface liquid water – although this is not impossible.

“There are probably many other processes that can produce gas that has not yet been detected,” Kane said.

Finally, Kane says it is important to understand what happened to the planet Venus, a planet that was once habitable and now has a temperature of up to 800 degrees Fahrenheit.

“I said that the differences between Venus and Earth are taken into account, and what went wrong for Venus, so we can get an insight into how the Earth is habitable, and we can make this planet the best it can be. Can do for, ”Ken said.


Did Jupiter push Venus into the fugitive greenhouse?


more information:
Stephen R. Kane et al., Did Jupiter’s migration accelerate Venus’ atmospheric evolution ?, The Planetary Science Journal (2020). DOI: 10.3847 / PSJ / abae63

Provided by University of California – Riverside

Quotes: Venus may be habitable today, if not for Jupiter (2020, 30 September) Retrieved 30 September 2020 from https://phys.org/news/2020-09-venus-habitable-today-jupiter.html was done.

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