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danielmachacek.bsky.social
Daniel Machacek
@danielmachacek.bsky.social
1.5K followers 170 following 100 posts
Space nerd, Image processor,
Lazy photographer,
Humanist
Posts Replies Media Videos
Reposted by Daniel Machacek
nev-t.bsky.social
MSL 4707 CC
© NASA/JPL-Caltech/LANL/CNES/IRAP/NeV-T

Gigapan - gigapan.com/gigapans/238...
GIGAmacro - viewer.gigamacro.com/view/BGXaoY6...
Gigapan Website - www.nev-t-gigamacros.com
#Mars #science #NASA
November 4, 2025 at 11:20 PM
Reposted by Daniel Machacek
kosmi.bsky.social
Krasheninnikov volcano in Kamchatka.

Image taken today by Sentinel-2.
October 30, 2025 at 9:28 AM
Reposted by Daniel Machacek
p-s-v.bsky.social
The beautiful Comet LEMMON's tail

The comet is going out with a bang. The tail was as bright as ever last night. Captured with Celestron RASA telescope, ZWO ASI533MC color camera, and an Antlia L-Filter.

📸 Chuck's Astrophotography (Chuck Ayoub)
x.com/chucksastrop...
October 31, 2025 at 7:18 PM
Reposted by Daniel Machacek
andrealuck.bsky.social
1/3 You might’ve seen last week’s newly released JWST data of Planetary Nebula NGC2440, here’s my take on it 😵

Full size 4K image and more info in this thread 🧵 🔭🧪

Credit: NASA/ESA/CSA/STScI/j. Roger/Andrea Luck CC BY
November 1, 2025 at 2:04 PM
Reposted by Daniel Machacek
tedstryk.bsky.social
The clouds of Saturn on August 21, 1981, from Voyager 1
The clouds of Saturn. Several eddys can be seen.
November 1, 2025 at 4:42 PM
Reposted by Daniel Machacek
p-s-v.bsky.social
Comet A6 lemmon

Captured with 16 inch Boller & Chivens🔭, f18, 7400mm focal length. The fov is only 6 arc mins, so really close into head of comet. Oct 29th, 10pm PST. 30s X 10 images. Such a dynamic and photogenic comet.

📸Debra Ceravolo
app.astrobin.com/search?p=eJy...
November 1, 2025 at 4:48 PM
Reposted by Daniel Machacek
climateofgavin.bsky.social
This is cool, 6 million year old ice from Antartica with inferred temperature ~12°C warmer than the late Pleistocene. No CO2 level yet! (That will be highly anticipated!)

www.pnas.org/doi/10.1073/...
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
www.pnas.org
October 28, 2025 at 8:51 PM
Reposted by Daniel Machacek
theplanetaryguy.bsky.social
Another STUNNING image from JWST, this time of the Red Spider Nebula—the vast, wispy, gaseous remains of a now-dead star, the white dwarf core still glowing in the centre.
A series of wispy, blue strands emanate from the centre of the image, which is glowing orangey–red with a little pink. The background is FESTOONED with stars, all set against a black backdrop.
October 28, 2025 at 5:59 PM
Reposted by Daniel Machacek
kosmi.bsky.social
The eye of Hurricane Melissa.

Image taken today by Sentinel-2.
October 28, 2025 at 7:22 PM
Reposted by Daniel Machacek
melina-iras07572.bsky.social
#Pluto system with #Hubble from July 2019. Four images were taken. The movement of the moons #Nix and #Hydra being anti-clockwise.

program: archive.stsci.edu/proposal_sea...
Pluto in the middle and 4 copies of moon Charon around it. The smaller moons Nix and Hydra are present with 4 copies each on the left side of the image.
October 27, 2025 at 1:04 PM
Reposted by Daniel Machacek
andrealuck.bsky.social
Fresh JWST view of Uranus taken Oct 6 2025 with NIRCam.

Full size & more info: flic.kr/p/2rByidu 🔭🧪
Credit: NASA/ESA/CSA/STScI/Andrea Luck CC BY

Proposal PI: Varun Bajaj
Proposal ID: 8975
Filters: F150W2-F162M, F410M
Image of Uranus taken by the James Webb Space Telescope, showing a whitish north polar region, vivid blue-greenish atmosphere and a few whitish elongated storms visible around the pole. The planet is surrounded by clearly defined ring system set against the black background of space.
October 26, 2025 at 2:04 PM
Reposted by Daniel Machacek
stim3on.bsky.social
#Comet C/2025 A6 #Lemmon in the constellation Boötes, on the evening of October 24th. Captured from the light polluted outskirts of Munich.

16 minutes integration time with my Fujifilm X-S10 and 135mm f4.5 lens (untracked).

#astrophotography 🔭
A starfield with many small and colorful stars is dominated by comet Lemmon which is oriented diagonally in the frame. The comet has a greenish coma and a diffuse yellowish dust tail is pointing up from the nucleus. Layered with the dust tail is the blueish ion-tail which is much narrower and longer, stretching beyond the top of the image. The ion tail shows some slight undulations from changes in the comets activity over time.
October 26, 2025 at 9:38 AM
Reposted by Daniel Machacek
landru79.bsky.social
#JUNO #Jupiter orbiter
#JIRAM Jovian Infrared Auroral Mapper
Perijove 70 Target: #IO

atmos.nmsu.edu/PDS/data/PDS...

NASA/JPL/SwRI/JIRAM/ISTITUTO NAZIONALE DI ASTROFISICA/j. Roger
October 26, 2025 at 11:51 AM
Reposted by Daniel Machacek
palomarskies.bsky.social
Here's about 22 minutes of motion of Comet C/2025 R2 (SWAN) (plus satellite) from last night. 🔭
October 25, 2025 at 9:13 PM
Reposted by Daniel Machacek
melina-iras07572.bsky.social
Planet #Uranus with #Hubble from two days ago.
program: archive.stsci.edu/proposal_sea...

Filters: F467M (blue), F547M (green), F763M (red/infrared)
Date: 2025-10-23 from 7:23:47 UT to 7:27:16 UT
Planet Uranus on the left side with a faint processing, showing the polar cap and the cyan color of the planet. Right side shows bright processing and the ring around the planet.
October 25, 2025 at 7:06 AM
Reposted by Daniel Machacek
kosmi.bsky.social
Krasheninnikov volcano in Kamchatka.

Image taken today by Sentinel-2.
October 23, 2025 at 8:42 AM
Reposted by Daniel Machacek
justinasvitkus.bsky.social
Sedna, frozen and lonely world drowned in darkness. It's red, ancient surface receives only a tiny amount of Sun's light.
#Sciart #space #illustration #astronomy #Sedna #OortCloud #SolarSystem
October 22, 2025 at 12:24 PM
danielmachacek.bsky.social
Bright auroras visible on the night side of Jupiter from the Juno's SRU camera during orbits 69 and 70.

Left image:
Date: 2025/01/28.
Time: 23:08:17 (UTC).

Right image:
Date: 2025/03/02.
Time: 16:04:45 (UTC).

Credit: NASA/Caltech-JPL/SwRI/D. Machacek.
Black-and-white image of bright aurora glowing on the night side of Jupiter with stars visible behind horizon. Image taken by SRU camera onboard Juno spacecraft during orbit 69. Black-and-white image of bright aurora glowing on the night side of Jupiter with stars visible behind horizon. Image taken by SRU camera onboard Juno spacecraft during orbit 70.
October 21, 2025 at 10:26 AM
Reposted by Daniel Machacek
justinasvitkus.bsky.social
Saturn as seen from Titan's polar regions. During winter season in south hemisphere a big, high altitude cloud hangs above south pole.
#Sciart #space #illustration #astronomy
October 20, 2025 at 7:35 PM
Reposted by Daniel Machacek
kosmi.bsky.social
Small part of Antarctica.

Image taken by Sentinel-2 on Aug. 29, 2025.

-66.45, 138.37

✌️
October 20, 2025 at 4:37 PM
Reposted by Daniel Machacek
jackiebranc.site
🟣 #JUPITER | PJ26 Jet S6
2020-04-10 14:45 UT | cleaned and enhanced

Mission Phase : PERIJOVE 26
PRODUCT ID: JNCE_2020101_26C00042_V01

source: www.missionjuno.swri.edu/junocam/proc...

Credit : #NASA / #SwRI / #MSSS / Jackie Branc © CC by

#Juno #JunoCam #GasGiant
JUPITER | PJ26 Jet S6 | 2020-04-10 14:45 UT | Mission Phase : PERIJOVE 26 | PRODUCT ID: JNCE_2020101_26C00042_V01 |Credit : NASA / SwRI / MSSS / Jackie Branc © CC BY PJ26 Jet S6 2020-04-10 14:45 UT NASA / SwRI / MSSS Mission Phase : PERIJOVE 26 Metadata FILTER NAME : BLUE, GREEN, RED IMAGE TIME : 2020-04-10T14:45:17.661 PRODUCT ID : JNCE_2020101_26C00042_V01 SPACECRAFT ALTITUDE : 82315.0 <km> SUB SPACECRAFT LATITUDE : -63.6761 SUB SPACECRAFT LONGITUDE : 123.9262
October 20, 2025 at 8:46 AM
Reposted by Daniel Machacek
p-s-v.bsky.social
☄️C/2025 A6 (Lemmon) 17.10.25 - 20:06-00:50

240x 1min of exposure.

The video is mirrored horizontally.

ASI2600MC + SpaceCat51

📸 Aleksi Ruotsila

Source
www.facebook.com/groups/14206...
October 20, 2025 at 3:13 AM
Reposted by Daniel Machacek
coreyspowell.bsky.social
Astronomers have detected a dark blob of...something, billions of light years away. It's as massive as a million Suns & it emits no detectable radiation.

It might be a clump of dark matter, revealing new details about the structure of the invisible universe. 🧪🔭

www.ucdavis.edu/news/astrono...
Left, our best surface brightness model of the 1.7-GHz global VLBI observation used here, which has been reconvolved with the main lobe of the interferometer’s point spread function and added to the residuals (34 μJy per beam r.m.s.). For reference, red contours show the surface brightness at 2.1 μm observed by the W. M. Keck Observatory adaptive optics system30. The positions of two low-mass perturbers are each marked with a black X. The 2 × 108 M⊙ object first detected by ref. 24 is labelled , and the 1.13 × 106 M⊙ detection reported here is labelled . The zoomed-in region shown in the right-hand two panels is indicated by the black square, which has a side length of 60 mas. Top right, detail of the bright arc around , with the colour scale modified to emphasize the gap in the arc produced by the gravitational perturbation of . Bottom right, GI corrections to the lensing convergence (expressed in units of lens-plane surface mass density), showing a compact, positive feature whose position and mass are consistent with the independent parametric modelling results for . The dashed black circle has a radius of 80 pc and the lensed emission is indicated by the black contours.
October 9, 2025 at 4:16 PM
Reposted by Daniel Machacek
melina-iras07572.bsky.social
Planet #Uranus 🪐 and inner moons with #JWST NIRCam 🔭 #planetsci Observation from this Monday (lol moon🌕day).

Filters: F150W2; F162M
Date: 2025-10-06 between 02:15:43 UT and 04:46:47 UT

Program: www.stsci.edu/jwst-program...
Uranus with rings and small elongated dots (tracks) around it.
October 9, 2025 at 1:18 PM
Reposted by Daniel Machacek
kosmi.bsky.social
Small part of Antarctica.

Image taken by Sentinel-2 on Oct. 7, 2025.

-76.38, -151.14
October 8, 2025 at 8:15 PM