Daniel Machacek
@danielmachacek.bsky.social
Space nerd, Image processor,
Lazy photographer,
Humanist
Lazy photographer,
Humanist
Reposted by Daniel Machacek
Saturn’s northern hemisphere on April 4, 2014. Processed in near-infrared false color and true color using images taken by NASA’s legendary Cassini spacecraft.
flic.kr/p/2hyVew5
flic.kr/p/2hyVevJ
flic.kr/p/2hyVew5
flic.kr/p/2hyVevJ
January 10, 2026 at 12:51 AM
Saturn’s northern hemisphere on April 4, 2014. Processed in near-infrared false color and true color using images taken by NASA’s legendary Cassini spacecraft.
flic.kr/p/2hyVew5
flic.kr/p/2hyVevJ
flic.kr/p/2hyVew5
flic.kr/p/2hyVevJ
Reposted by Daniel Machacek
Nyamuragira lava lake.
Image taken by Sentinel-2 on Dec. 7, 2025.
Image taken by Sentinel-2 on Dec. 7, 2025.
January 8, 2026 at 2:05 PM
Nyamuragira lava lake.
Image taken by Sentinel-2 on Dec. 7, 2025.
Image taken by Sentinel-2 on Dec. 7, 2025.
Reposted by Daniel Machacek
60 frames of the moons moving from the uncal files of the F150W2 filter from program www.stsci.edu/jwst-program...
#JWST NIRCam animation of #Uranus. Images not calibrated and not cleaned.
#JWST NIRCam animation of #Uranus. Images not calibrated and not cleaned.
January 8, 2026 at 11:51 AM
60 frames of the moons moving from the uncal files of the F150W2 filter from program www.stsci.edu/jwst-program...
#JWST NIRCam animation of #Uranus. Images not calibrated and not cleaned.
#JWST NIRCam animation of #Uranus. Images not calibrated and not cleaned.
Reposted by Daniel Machacek
13. Full scale replica of Saturn V in Huntsville ( 2018-12-24 ).
December 26, 2025 at 10:27 PM
13. Full scale replica of Saturn V in Huntsville ( 2018-12-24 ).
Reposted by Daniel Machacek
New paper alert!
tl;dr: the seafloor of Europa is probably tectonically inert, meaning little to no active fracturing that could expose fresh rock to seawater.
Without such water–rock reactions the prospect for there being life within Europa just took a big hit.
A thread:
tl;dr: the seafloor of Europa is probably tectonically inert, meaning little to no active fracturing that could expose fresh rock to seawater.
Without such water–rock reactions the prospect for there being life within Europa just took a big hit.
A thread:
January 6, 2026 at 5:55 PM
New paper alert!
tl;dr: the seafloor of Europa is probably tectonically inert, meaning little to no active fracturing that could expose fresh rock to seawater.
Without such water–rock reactions the prospect for there being life within Europa just took a big hit.
A thread:
tl;dr: the seafloor of Europa is probably tectonically inert, meaning little to no active fracturing that could expose fresh rock to seawater.
Without such water–rock reactions the prospect for there being life within Europa just took a big hit.
A thread:
Reposted by Daniel Machacek
This is what it would look like to fly over the Martian North Pole aboard @esa.int's Mars Express orbiter.
This sequence of 117 images was captured by the VMC camera on June 14th, 2019 over the course of 3 hours and is played a 1200x speed. #planetsci
Credit: ESA/Simeon Schmauß
flic.kr/p/2rQAPdw
This sequence of 117 images was captured by the VMC camera on June 14th, 2019 over the course of 3 hours and is played a 1200x speed. #planetsci
Credit: ESA/Simeon Schmauß
flic.kr/p/2rQAPdw
January 6, 2026 at 7:00 PM
This is what it would look like to fly over the Martian North Pole aboard @esa.int's Mars Express orbiter.
This sequence of 117 images was captured by the VMC camera on June 14th, 2019 over the course of 3 hours and is played a 1200x speed. #planetsci
Credit: ESA/Simeon Schmauß
flic.kr/p/2rQAPdw
This sequence of 117 images was captured by the VMC camera on June 14th, 2019 over the course of 3 hours and is played a 1200x speed. #planetsci
Credit: ESA/Simeon Schmauß
flic.kr/p/2rQAPdw
Reposted by Daniel Machacek
PJ03 Jupiter Images, Exaggerated Color/Contrast. Full resolution at flic.kr/p/2rQ2PNi
January 4, 2026 at 6:38 AM
PJ03 Jupiter Images, Exaggerated Color/Contrast. Full resolution at flic.kr/p/2rQ2PNi
Reposted by Daniel Machacek
And here's my favourite case - growing of Nishinoshima in Japan 📏😊
Images taken by Landsat-8.
Images taken by Landsat-8.
January 3, 2026 at 1:40 PM
And here's my favourite case - growing of Nishinoshima in Japan 📏😊
Images taken by Landsat-8.
Images taken by Landsat-8.
Reposted by Daniel Machacek
#Planet #Jupiter with moon #Europa on January 2. Images taken with #Celestron C9.25 EdgeHD, #Televue 2.5x barlow and #PlayerOne Uranus C camera. Seeing was fair. Right after the last image, we got snow... just in time to close the observatory roof.
#astronomy #astrophotography #planets #solarsystem
#astronomy #astrophotography #planets #solarsystem
January 3, 2026 at 11:57 AM
#Planet #Jupiter with moon #Europa on January 2. Images taken with #Celestron C9.25 EdgeHD, #Televue 2.5x barlow and #PlayerOne Uranus C camera. Seeing was fair. Right after the last image, we got snow... just in time to close the observatory roof.
#astronomy #astrophotography #planets #solarsystem
#astronomy #astrophotography #planets #solarsystem
Reposted by Daniel Machacek
sunspots 2024-2025
Taken by Patricio Leon on January 2, 2026 @ Santiago, Chile
The image shows the evolution of sunspots in consecutive years during solar maximum.
(ALT for more info)
spaceweathergallery2.com/indiv_upload...
Taken by Patricio Leon on January 2, 2026 @ Santiago, Chile
The image shows the evolution of sunspots in consecutive years during solar maximum.
(ALT for more info)
spaceweathergallery2.com/indiv_upload...
January 3, 2026 at 12:11 AM
sunspots 2024-2025
Taken by Patricio Leon on January 2, 2026 @ Santiago, Chile
The image shows the evolution of sunspots in consecutive years during solar maximum.
(ALT for more info)
spaceweathergallery2.com/indiv_upload...
Taken by Patricio Leon on January 2, 2026 @ Santiago, Chile
The image shows the evolution of sunspots in consecutive years during solar maximum.
(ALT for more info)
spaceweathergallery2.com/indiv_upload...
Reposted by Daniel Machacek
Some planetary nebulae images I processed over the years:
NGC 7094, NGC 2371, NGC 4071. #PlanetaryNebulae
NGC 7094, NGC 2371, NGC 4071. #PlanetaryNebulae
January 3, 2026 at 4:52 PM
Some planetary nebulae images I processed over the years:
NGC 7094, NGC 2371, NGC 4071. #PlanetaryNebulae
NGC 7094, NGC 2371, NGC 4071. #PlanetaryNebulae
Reposted by Daniel Machacek
Let the new year swirl in…
What looks like a vortex of fire is in reality a disc around the young AB Aurigae star.
Close to the centre, the ‘twist’ (in very bright yellow) marks the spot where scientists believe a planet is forming. 🔭
What looks like a vortex of fire is in reality a disc around the young AB Aurigae star.
Close to the centre, the ‘twist’ (in very bright yellow) marks the spot where scientists believe a planet is forming. 🔭
January 1, 2026 at 1:01 PM
Let the new year swirl in…
What looks like a vortex of fire is in reality a disc around the young AB Aurigae star.
Close to the centre, the ‘twist’ (in very bright yellow) marks the spot where scientists believe a planet is forming. 🔭
What looks like a vortex of fire is in reality a disc around the young AB Aurigae star.
Close to the centre, the ‘twist’ (in very bright yellow) marks the spot where scientists believe a planet is forming. 🔭
Reposted by Daniel Machacek
On 13 February 1990, from a distance of 6.4 billion km, NASA's Voyager 1 spacecraft turned around and photographed our homeworld.
About halfway up on the right side is a tiny speck of light, about one pixel across.
"That's home. That's us.
A mote of dust suspended in a sunbeam."
—Carl Sagan
About halfway up on the right side is a tiny speck of light, about one pixel across.
"That's home. That's us.
A mote of dust suspended in a sunbeam."
—Carl Sagan
December 31, 2025 at 11:17 PM
On 13 February 1990, from a distance of 6.4 billion km, NASA's Voyager 1 spacecraft turned around and photographed our homeworld.
About halfway up on the right side is a tiny speck of light, about one pixel across.
"That's home. That's us.
A mote of dust suspended in a sunbeam."
—Carl Sagan
About halfway up on the right side is a tiny speck of light, about one pixel across.
"That's home. That's us.
A mote of dust suspended in a sunbeam."
—Carl Sagan
Reposted by Daniel Machacek
Triton, moon of Neptune, seen in front of Neptune from the receding Voyager 2 in 1989.
December 31, 2025 at 5:25 PM
Triton, moon of Neptune, seen in front of Neptune from the receding Voyager 2 in 1989.
Reposted by Daniel Machacek
[ 1/31 ] 🧵
Time for yet another megathread of my favourite satellite pics.
This time I have 123 images processed by me in 2025 *.
Various dates, random places.
Most of them were taken by Sentinel-2, some by S-3 and one or two by Landsat.
*There's one more pic that isn't mine, but it's so good 😊
Time for yet another megathread of my favourite satellite pics.
This time I have 123 images processed by me in 2025 *.
Various dates, random places.
Most of them were taken by Sentinel-2, some by S-3 and one or two by Landsat.
*There's one more pic that isn't mine, but it's so good 😊
January 1, 2026 at 8:08 PM
[ 1/31 ] 🧵
Time for yet another megathread of my favourite satellite pics.
This time I have 123 images processed by me in 2025 *.
Various dates, random places.
Most of them were taken by Sentinel-2, some by S-3 and one or two by Landsat.
*There's one more pic that isn't mine, but it's so good 😊
Time for yet another megathread of my favourite satellite pics.
This time I have 123 images processed by me in 2025 *.
Various dates, random places.
Most of them were taken by Sentinel-2, some by S-3 and one or two by Landsat.
*There's one more pic that isn't mine, but it's so good 😊
Reposted by Daniel Machacek
Open up this picture fully.
Then look at the surface of Mars.
Then look up to the top right.
Spot Mars' moon Phobos high in the sky.
Then notice the bright spot beside Phobos.
That's Earth.
Then look at the surface of Mars.
Then look up to the top right.
Spot Mars' moon Phobos high in the sky.
Then notice the bright spot beside Phobos.
That's Earth.
December 30, 2025 at 9:30 PM
Open up this picture fully.
Then look at the surface of Mars.
Then look up to the top right.
Spot Mars' moon Phobos high in the sky.
Then notice the bright spot beside Phobos.
That's Earth.
Then look at the surface of Mars.
Then look up to the top right.
Spot Mars' moon Phobos high in the sky.
Then notice the bright spot beside Phobos.
That's Earth.
Reposted by Daniel Machacek
"Top 10 ☄️ images of this year by Mitsunoi Tsumura
2025 was a busy year with many interesting comets appearing in the second half.
I'm looking forward to seeing what kind of comets will appear next year."
Source
www.facebook.com/groups/22700...
2025 was a busy year with many interesting comets appearing in the second half.
I'm looking forward to seeing what kind of comets will appear next year."
Source
www.facebook.com/groups/22700...
December 30, 2025 at 2:43 PM
"Top 10 ☄️ images of this year by Mitsunoi Tsumura
2025 was a busy year with many interesting comets appearing in the second half.
I'm looking forward to seeing what kind of comets will appear next year."
Source
www.facebook.com/groups/22700...
2025 was a busy year with many interesting comets appearing in the second half.
I'm looking forward to seeing what kind of comets will appear next year."
Source
www.facebook.com/groups/22700...
Reposted by Daniel Machacek
9. Hunga Tonga before huge 2022 eruption ( 2021-04-10 ).
December 25, 2025 at 2:00 PM
9. Hunga Tonga before huge 2022 eruption ( 2021-04-10 ).
Reposted by Daniel Machacek
This week’s image is of Jupiter! Since this image comes from Gemini North NIRI, which has a field of view of 22x22”, a mosaic of multiple images was used to obtain this stunning portrait peering into Jupiter’s cloud-forming region. Check out a few paper highlights in the thread! #Astronomy
December 26, 2025 at 4:25 PM
This week’s image is of Jupiter! Since this image comes from Gemini North NIRI, which has a field of view of 22x22”, a mosaic of multiple images was used to obtain this stunning portrait peering into Jupiter’s cloud-forming region. Check out a few paper highlights in the thread! #Astronomy
Reposted by Daniel Machacek
Tonight I decided to try something new. I managed to detect Exoplanet TOI 3714b transiting its host star using my 190MN scope and 2600MM camera. Totally blown away that this is possble from my back yard here in the UK. Transit took 1H 38mins and was about 5% in depth 🤯. #Astrophotography #exoplanet
December 26, 2025 at 11:11 PM
Tonight I decided to try something new. I managed to detect Exoplanet TOI 3714b transiting its host star using my 190MN scope and 2600MM camera. Totally blown away that this is possble from my back yard here in the UK. Transit took 1H 38mins and was about 5% in depth 🤯. #Astrophotography #exoplanet
Reposted by Daniel Machacek
This image of MACS 0416 from #NASAWebb and Hubble shows two galaxy clusters in the process of combining. Their mass magnifies the light from more distant background galaxies, helping astronomers identify distant supernovas and even individual stars: bit.ly/4qSNy5T 🔭
December 26, 2025 at 2:50 PM
This image of MACS 0416 from #NASAWebb and Hubble shows two galaxy clusters in the process of combining. Their mass magnifies the light from more distant background galaxies, helping astronomers identify distant supernovas and even individual stars: bit.ly/4qSNy5T 🔭
Reposted by Daniel Machacek
❄️ Our ExoMars TGO spacecraft revealed water frost inside the summit crater of Mount Olympus on Mars. Before this observation, it was thought improbable for frost to exist in this area. 🧪🔭
🔗 esa.int/ESA_Multimedia/Images/2024/06/Newfound_frost_atop_Olympus_Mons
🔗 esa.int/ESA_Multimedia/Images/2024/06/Newfound_frost_atop_Olympus_Mons
December 26, 2025 at 11:59 AM
❄️ Our ExoMars TGO spacecraft revealed water frost inside the summit crater of Mount Olympus on Mars. Before this observation, it was thought improbable for frost to exist in this area. 🧪🔭
🔗 esa.int/ESA_Multimedia/Images/2024/06/Newfound_frost_atop_Olympus_Mons
🔗 esa.int/ESA_Multimedia/Images/2024/06/Newfound_frost_atop_Olympus_Mons
Reposted by Daniel Machacek
10. Fog flowing under the Golden Gate Bridge ( 2020-09-20 ).
December 25, 2025 at 3:59 PM
10. Fog flowing under the Golden Gate Bridge ( 2020-09-20 ).
Reposted by Daniel Machacek
'Crimson Star'
60,526 ångström-131, 171 & 304 frames acquired by SDO are conformed, repaired, graded & remixed to create 40 minutes of 4k UHD video footage used in this film.
Credit: SDO / NASA / AIA / Seán Doran
youtu.be/GV0t3fWD0ok
60,526 ångström-131, 171 & 304 frames acquired by SDO are conformed, repaired, graded & remixed to create 40 minutes of 4k UHD video footage used in this film.
Credit: SDO / NASA / AIA / Seán Doran
youtu.be/GV0t3fWD0ok
December 25, 2025 at 12:18 PM
'Crimson Star'
60,526 ångström-131, 171 & 304 frames acquired by SDO are conformed, repaired, graded & remixed to create 40 minutes of 4k UHD video footage used in this film.
Credit: SDO / NASA / AIA / Seán Doran
youtu.be/GV0t3fWD0ok
60,526 ångström-131, 171 & 304 frames acquired by SDO are conformed, repaired, graded & remixed to create 40 minutes of 4k UHD video footage used in this film.
Credit: SDO / NASA / AIA / Seán Doran
youtu.be/GV0t3fWD0ok
Reposted by Daniel Machacek
December 25, 2025 at 8:07 AM