Uploaded October 2024 | Updated September 2026, 2 hours ago
This time-lapse movie is assembled from Hubble Space Telescope observations spanning approximately 90 days (between December 2023 and March 2024) when the giant planet Jupiter ranged from 391 million to 512 million miles from the Sun.
Astronomers measured the Great Red Spot's size, shape, brightness, color, and vorticity over a full oscillation cycle. The data reveal that the Great Red Spot is not as stable as it might look. It was observed going through an oscillation in its elliptical shape, jiggling like a bowl of gelatin. The cause of the 90-day oscillation is unknown.
Read more about how Hubble watches Jupiter's Great Red Spot behave like a stress ball: hubblesite.org/contents/news-releases/2024/news-2024-011
Credit: Science: NASA, ESA, Amy Simon (NASA-GSFC); Video: Joseph DePasquale (STScI).
#Astronomy #Hubble #NASA
This time-lapse movie is assembled from Hubble Space Telescope observations spanning approximately 90 days (between December 2023 and March 2024) when the giant planet Jupiter ranged from 391 million to 512 million miles from the Sun.
Astronomers measured the Great Red Spot's size, shape, brightness, color, and vorticity over a full oscillation cycle. The data reveal that the Great Red Spot is not as stable as it might look. It was observed going through an oscillation in its elliptical shape, jiggling like a bowl of gelatin. The cause of the 90-day oscillation is unknown.
Read more about how Hubble watches Jupiter's Great Red Spot behave like a stress ball: hubblesite.org/contents/news-releases/2024/news-2024-011
Credit: Science: NASA, ESA, Amy Simon (NASA-GSFC); Video: Joseph DePasquale (STScI).
#Astronomy #Hubble #NASA









![Comet C/2023 A3 brightens SOHO’s week
From 7 until 13 October 2024, ESA/NASA’s SOHO ( https://www.esa.int/Science_Exploration/Space_Science/SOHO ) spacecraft recorded Comet C/2023 A3 (Tsuchinshan–ATLAS), the second brightest comet it has ever seen. Meanwhile, large amounts of material were being spewed out by the Sun (covered in the centre), and planet Mercury is visible to the left.
The comet’s nucleus is clearly visible, surrounded by a dusty coma and trailing an impressively long tail. SOHO sees the large dust tail edge-on, curving in on itself as it is pushed outward by solar wind.
At the end of the video you can also see a rare phenomenon known as an ‘anti-tail’: a long, thin line that points towards the Sun. This tail is an optical illusion coming from SOHO getting an edge-on view of the larger cometary dust particles that accumulate in the comet’s orbital plane.
Comet C/2023 A3 was seen for the first time early last year. It most likely came from the distant Oort cloud ( https://www.esa.int/ESA_Multimedia/Images/2023/11/Where_do_comets_come_from ], and the last time this comet flew through the inner Solar System (if ever) was at least 80 000 years ago.
The comet reached an estimated peak brightness just beyond –4 magnitude. (The more negative the visual magnitude value, the brighter the object.) Of the more than 5000 comets ( https://www.esa.int/ESA_Multimedia/Images/2024/03/SOHO_reaches_5000_comets ) SOHO has seen flying past the Sun, only Comet C/2006 P1 (McNaught) ( https://sci.esa.int/web/soho/-/40529-brightest-comet-ever-observed-by-soho ) was brighter, with a visual magnitude of –5.5.
SOHO’s location between the Sun and Earth gave it a front-row seat, but the same comet has been visible from Earth every evening since 12 October 2024. Throughout October, as the comet moves farther away from the Sun, it will gradually grow fainter and rise higher up in the western sky.
The week that SOHO watched Comet Tsuchinshan–ATLAS was also a wild one in terms of space weather. The Sun unleashed no less than 4 X-class flares (the highest intensity type of flare), 28 medium-intensity M-class flares, and 31 coronal mass ejections – the latter being visible as white clouds of material in the video. All this activity led to two geomagnetic storms on Earth, resulting in beautiful auroras lighting up the night sky.
SOHO, short for Solar and Heliospheric Observatory, is a joint ESA-NASA mission to study the Sun. For almost 29 years now, it has been watching the Sun itself as well as the much fainter light coming from the Sun’s outer atmosphere, called the solar corona. The data shown in this video were taken by the LASCO C3 coronagraph instrument.
Special thanks to Simeon Schmauß, who processed the raw data to create this impressive video.
What types of comets are there? ( https://www.esa.int/Science_Exploration/Space_Science/Comet_Interceptor/What_types_of_comets_are_there )
How are comets named? ( https://www.esa.int/Science_Exploration/Space_Science/Comet_Interceptor/How_are_comets_named )
Credit: Simeon Schmauß & SOHO (ESA & NASA)
#Comets #SOHO #ESA Comet C/2023 A3 brightens SOHO’s week](https://i.ytimg.com/vi/mz7XXWoZFws/mqdefault.jpg)
