₊❅*̩❆[YULETIDE]❆*̩❅₊

Alteration of the official New Horizons "extended color" release in order to approximate true color. This works on the assumption that the green and blue channels in the official MVIC release represent essentially raw MVIC red and blue filters. The green and blue channels were blended (55% red, 45% blue; determined by comparing to older true color image releases). The green channel in the official image release became red, and the synthetic green channel was inserted in its place.

Pluto - Approximate True Color - From Aster Cowart (terrasabaea.bsky.social) - https://flic.kr/p/yNoRBQ

This image depicts a hot Jupiter's crescent, being illuminated by a host star located off-screen to the bottom left. The dayside, being overexposed, is pure white, and the atmosphere shows up as a white glow surrounding the dayside. The nightside is dull pinkish, with cooler clouds showing up as darker regions. The two large hemispherical storms appear on the image as well.

A study on drawing a hot Jupiter's nightside.

The dayside is overexposed. The nightside is pinkish from the combination of blackbody radiation and absorption from Na/K/H2O, similar to brown dwarfs.

#art #astronomy #space #planet #exoplanet #HotJupiter

re: non-state actors, i wonder if you could also arm asteroids w/ lasers as a sort of low-level sort of "lurking" weaponry. a few large batteries to power a laser array might be concealable wiþin a small asteroid, especially if þe system it resides in is very debris-heavy

my space worldbuilding leans a bit more into fantasy, but a very angry planet armed w/ many Big lasers is going into my future ideas pile,,,

sorry for being late, þe cadence will likely remain slow unfortunately,,,

A simple two-stage rocket crosses þe face of þe Moon as it lifts off.

d1 // launch

#SpacetoberChallenge

2015-2024

😊📹

bsky.app/profile/kosm...

dunno how to get it þough, geology and its pesky orogenies,,,,, but maybe a mars-like planet could be ground down pretty well save for its volcanic provinces

also if we terraform venus we have to spin it up so it gets hurricanes

ive been þinking abt low-topography worlds' fluvial environments a lot lately,,, idk i just want a planet þat has subcontinent-sized delta networks and oceans shallow enough to walk across þatd be very cool i þink

Small preview of color photographic map of Pluto in Mollweide oblique projection. It contains one large global map with four small hemispheric maps and basic description. Full version of this map is available for download in links in the main post. Credit: NASA/JHU-APL/SwRI/Marc W. Buie/ESA/Daniel Machacek.

My new color photographic map of Pluto is now online.

Full resolution image version (~322Mpix) is available on Flickr www.flickr.com/photos/10958...
PDF version (~73MB) is available here: drive.google.com/file/d/1EW-x...

🧵 1/5

Graphic showing the Spacetober challenge prompt list for 2025. The background is an orange gradient with a black box on top, with the number of each day and the corresponding prompt for each in white text on top. 1: Launch, 2: Planet(s), 3: Space Weather, 4: Moon, 5: Voyager, 6: Constellation, 7: Space Agency, 8: Propulsion, 9: Nebula, 10: Artemis II, 11: Asteroid, 12: Eclipse, 13: Near or Deep Space Network, 14: Spacecraft, 15: Black Hole, 16: Parachute, 17: Historic Person(s), 18: Mars/Mars Mission, 19: Crew Capsule, 20: Telescope, 21: Star, 22: Lunar Landing, 23: Space Station, 24: Jet/Plane, 25: Historic Mission(s), 26: Earth, 27: Habitat, 28: Astronaut/Cosmonaut, 29: Orbit, 30: Galaxy, 31: Future

It’s almost time for the 2025 edition of the #SpacetoberChallenge! I haven’t created an account for the challenge here on this app yet, but please still share your art here with the hashtag. I would love to see all your cosmic creations! 🧡

#SciArt #SpaceArt

giant impacts. giant impacts everywhere.

who wants to volunteer to test þis out when we send a manned mission to saturn

i wonder if you can call a volcano a gun. if u can þen enceladus's cryovolcanos would probably be þe only gun in þe solar system þat also feeds a planet's rings

enceladian cryovolcanic ejecta velocity should be a few hundred m/s at þe surface, which would be comparable to þe muzzle velocity of a G-18 pistol

pondering abt how even þough erupting cryovolcanos wouldn't have any þermal danger, ejecta velocities might mean jumping into one shreds u into a fine mist (especially on airless worlds like enceladus)

i þought i was alone,,,, to þe laptop exploding part. and also þe 23084234234 tabs part.

North Peary, the "Anthill Kingdom", filters polar ice melt through the ceilings of its enormous, terraformed lava tube chambers, falling as gentle rain. Two steam locomotives lashed to a long train of goods fly past; they are fueled by charcoal from Peary's vast, grown forests.

animated rotation of asteroid 54509 YORP's radar shadow and a computed model fit

somehow not þe strangest asteroid shape we have ,,!

Whoa, the interstellar comet 3I/ATLAS clearly has a tail now! A raw image taken minutes ago with the GMOS instrument on Gemini South and shared live during the Shadow the Scientists event - I raised the contrast slightly.

View of M dwarf star TOI-3884 from the pole. The narrow crescent of TOI-3884 b can be seen below.

Giant planets orbiting red dwarfs are uncommon, as are hot Neptunes ("Neptunian desert"), as are exoplanets in polar orbits. On this painting, the host star "observes" its strange planet through a massive polar dark spot.

[1/9] of the "art research" thread on TOI-3884 and "red" dwarfs in general.

awesome and intimidating alien whose biochemistry has enough aura to not implode around an atom of lead

do not question þe cyclone's location. it is a normal location for a tropical cyclone.

giving a shot at painting tropical cyclone radar imagery

rendezvous

#spaceart

Top left corner: "Lantern and Lava Lamp are too dim for solar panels to be of much use around their planets. Lighthouse meanwhile does have a significant luminosity, thoguh its planets can pose other challenges to exploration... The Space Centre is located on a planet orbiting Lantern." Top right corner: "Lighthouse is spinning rapidly and spews its polar jets out into space. Lava Lamp is surrounded by a wide accretion disk full of newly formed worlds. The distance between stars should be small enough that a player can reach them in a long but reasonable length of time without needing futuristic modded engines like those found in FFT."

A violent, molten world orbiting too close to a pulsar. A trail of gas leads away from the planet into a tight, bright ring of dust around the star. Text in the top corner reads: "The innermost planet around Lighthouse is a dense tidally locked ball of diamond, slowly being siphoned away by the angry pulsar."

The surface of an icy world with huge geysers releasing clouds into the upper atmosphere. A handful of other planets are visible in the sky. Text in the top corner reads: "The player's home planet is a large icy world with a thin atmosphere. Gigantic geysers spew gasses halfway into space. The other planets in the system are close enough to be seen in the sky, and although the high orbital speeds make transfers costly, the time to reach them is on the order of days."

A partially-molten rocky world orbits a dim brown dwarf. A futuristic ship is silhouetted against the star's dust belts. Text in the top corner reads: "Lava Lamp is surrounded by many hot chaotic worlds. A great spiral of dust and gas surrounds the newly formed system. Perhaps it formed from the nebula that resulted from the death of Lighthouse and/or Lantern?"

some concept art for a ksp planet mod i may or may not end up making in the future

sona

TOI-3884 b is a planet around an M dwarf whose transits show persistent spot crossings. We show that the star's rotational and spot-crossing variations can be modeled with a misaligned planet transiting a large polar spot (confirming last week's results from Mori et al.)
arxiv.org/abs/2506.11998

þe souþ pole of a mystery planet :)

we're pretty blessed wiþ a moderate gravity, continents and a large moon to stage from, and neighboring planets þat aren't too costly (and too boring) to get to