Younger than the sun, the star HR 8799 continues to arouse the curiosity of researchers.
Located 133.3 light-years from Earth, it has the particularity of being surrounded by four exoplanets which evolve in orbit around it.
A celestial choreography which has been the subject of particularly careful observation over the past twelve years by astrophysicist Jason Wang, explains
The Huffington Post
.
A researcher attached to Northwestern University in Chicago, the latter filmed this ballet and collected over time astronomical amounts of data related to these gaseous planets located outside the solar system.
Which allowed him to post a video on his YouTube channel last month.
A time lapse featuring the circular and accelerated movement of the four exoplanets over the past twelve years.
Access to this content has been blocked to respect your choice of consent
By clicking on "
I ACCEPT
", you accept the deposit of cookies by external services and will thus have access to the content of our partners
I ACCEPT
"Enjoying Something Wonderful"
“It is usually difficult to see the planets in orbit.
Astronomical events happen either too quickly or too slowly to be captured on film,” the researcher detailed in a university statement.
According to his calculations, the planet closest to the star HR 8799 goes around it in 45 years, against nearly 500 years for the farthest.
“This video shows planets in motion on a human timescale.
I hope it will allow people to appreciate something wonderful, ”added the astrophysicist, about these four exoplanets even larger than Jupiter, Saturn, Uranus and Neptune.
In total, NASA indicated on March 21, 2022 that it had exceeded the symbolic bar of 5,000 identified exoplanets.
Water could be on about twenty of them.
Science
Space: Discovery of two exoplanets mainly made up of water
Science
A planet racing towards its doom offers a possible glimpse of the end of the Earth
Science
Astronomy
Stars
Exoplanet