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Apparent Sizes of the planets relative to the Moon (as seen from Earth)

Image Credit: Reddit (www.reddit.com/r/space/comm...)

Video Credit: "Sizes of celestial objects in the sky" via Dr. James O'Donoghue @interplanetary.bsky.social (youtu.be/A36KPChd6N4)

#planets #space #astronomy #science
Mars Rotation - via Space Telescope Science Institute

This animation was assembled from a combination of Hubble Space Telescope images of Mars taken from December 28th to 30th, 2024. At the midpoint of the Hubble observations, Mars was approximately 61 million miles from Earth.
May 11, 2025 at 12:20 PM
Sea Ice Extent 1978-2025

Credit: Mark SubbaRao (NASA/GSFC)

Link: svs.gsfc.nasa.gov/5521/

The Sea Ice Index provides a quick look at Arctic- and Antarctic-wide changes in sea ice.

#earth #climate #climatecrisis
March 28, 2025 at 2:06 PM
Cosmic Tornado

Credits: NASA, ESA, CSA, J. DePasquale (STScI), L. Hustak (STScI), G. Bacon (STScI), R. Crawford (STScI), D. Kirshenblat (STScI), C. Nieves (STScI), A. Pagan (STScI), F. Summers (STScI)
March 24, 2025 at 8:00 PM
Sidereal vs Synodic Month

Animation of Moon Rotation: LRO, Arizona State U., NASA
Infographic: SpaceFM

A sidereal month is the time the Moon orbits the Earth as respect to the background stars.
March 12, 2025 at 12:18 PM
NASA's Lunar Reconnaissance Orbiter captured this image of @fireflyaerospace 's Blue Ghost Mission 1 lander on the Moon

Link: www.lroc.asu.edu/images/1406

#lroc #blueghost #space #moon
March 5, 2025 at 6:41 PM
Geologic Time Scale

Image 1: CK12 Foundation
Image 2: normaals

#science #geology #timescale
February 17, 2025 at 5:38 PM
Reposted
Have you ever seen a star in its dying moments? Thanks to Hubble, now you do! 🔭

This is the Egg Nebula (CRL2688), a protoplanetary nebula ~3,000 light-years away.

I processed 2016 Hubble data for the first image; 2002 for the second, which is more like a zoom into it.

HD: flic.kr/p/2qLkMCK
February 12, 2025 at 3:41 PM
Primary Mirror Size Comparison Between Webb and Hubble

Credit: NASA's Goddard Space Flight Center

The James Webb Space Telescope primary mirror is 6.5 meters (21 feet 4-inches) across. The Hubble Space Telescope primary mirror is 2.4 meters (8-feet) across.
February 9, 2025 at 4:06 PM
The PLANETS* to scale not only in size, but also in their tilt and rotation speed - credit Dr. James O'Donoghue @interplanetary.bsky.social

Link: youtu.be/WX6PRDqfLNc

From description:
"To roughly explain the tilts: we think they started out roughly the same in tilt, so either by huge impacts,
February 5, 2025 at 10:15 AM
Reposted
A large 2,400 kilometer (1,491 miles) wide cyclone near Jupiter’s North Temperate Belt. Seen by Juno during Perijove 68, Dec. 27 2024.

flic.kr/p/2qJVX1m
February 4, 2025 at 5:32 PM
True-Color Solar System Collage

Credit: Ellen Brundige
True-Color solar system collage: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto
Source: owlcation.com/stem/True-Co...
#SolarSystem #space #planets #astronomy #Astrophotography #science #EllenBrundige #collage #solarsystem
February 4, 2025 at 5:58 PM

Mars Apparent Retrogade Motion as seen from Earth Visually Explained

Apparent Retrograde Motion is when Mars appears to move backward in the sky as seen from Earth. 

Found here: www.reddit.com/r/physicsgif...

#mars #earth #space #orbit #motion #astronomy #science
January 26, 2025 at 9:00 AM
Firefly’s Blue Ghost lunar lander caught Earth on video as the lander continued its journey to the Moon - Credit: @FireflyAerospace⁣

Blue Ghost is expected to land on March 2, delivering 10 different NASA science investigations to the Moon’s surface.⁣
January 26, 2025 at 8:31 AM
Reposted
La Cometa C/2024G3-Atlas, dopo il passaggio intorno al Sole ha iniziato a disintegrarsi ma lasciando dietro una coda enorme e spettacolare, svariate volte più lunga del Sole stesso!
Credit - NASA/STEREO/SECCHI + Alan Watson
January 23, 2025 at 11:23 AM
If extraterrestrial civilizations are monitoring our TV broadcasts, then this is what they are currently watching

Credit: Abstruse Goose: Electromagnetic Leak
Link: www.lastwordonnothing.com/2013/01/21/a...
January 19, 2025 at 10:11 PM
Did Earth capture the Moon?

Darren M. Williams, et. al. has revived the capture hypothesis in his recent paper

H/t Tony Dunn (X)

If a binary planet system passed close enough to Earth, it could break up the binary pair capturing one.
January 5, 2025 at 2:31 PM
Reposted
Above and Below Titan's Atmosphere #5 - From Val Klavans - https://flic.kr/p/j1L9L1
January 4, 2025 at 6:00 AM
Reposted
Jupiter, from JunoCam PJ45 raw data acquired between 2024-12-27T04:39 and 2024-12-27T05:10 from altitude ranging from 54456 to 10141 km (exaggerated color/contrast)
January 1, 2025 at 5:27 AM
Total solar eclipse seen from space - via @europeanspaceagency , data @noaa

These Images are always beautiful!!

Geostationary satellite GOES 16 orbiting 36 000 km away captured images of the rare celestial event happened on 8 april 2024
December 30, 2024 at 1:17 PM
Reposted
Enceladus in 2013 as its cryovolcanic plumes feed into Saturn’s E ring. Stars streaks due to the long exposure by Cassini. Extending to the left is the moon’s shadow.
December 27, 2024 at 11:41 PM
Ants Solving A Puzzle

Credit: "Comparing cooperative geometric puzzle solving in ants versus humans" (scientific paper, doi.org/10.1073/pnas...,
Tabea Dreyer, Amir Haluts Amos Korman and Ofer Feinerman)

When ants work in groups, their performances rise significantly.
December 25, 2024 at 3:08 PM
Reposted
A new study charts 2 billion years of life's diversity and major extinctions. It highlights one of the great mysteries of Earth history: Why was life largely stagnant for a "boring billion" years, and how did it break out of that rut? 🧪

astrobiology.com/2024/12/exte...
December 23, 2024 at 7:33 PM
Slow-motion videos of sprites taken from Hiratsuka (Japan) on December 21, 2024 - credit @dfuji1.bsky.social (X, #dfuji1)

Infographic via noaa

Link x.com/dfuji1/statu...
December 23, 2024 at 11:21 AM
Reposted
The same day, NASA’s Juno made its 65th closest approach to Jupiter

bsky.app/profile/andr...
Jupiter 's Circumpolar Cyclones a few days ago...

Full size image: flic.kr/p/2qjjjrc 🔭

NASA's Juno
Orbit (Perijove) 65
Title: PJ65 North Pole at Minimum Emission Angle
Altitude: 11084.3 km
Time: 2024-09-20T02:16:24.037
ID: JNCE_2024264_65C00036_V01
Filter: BLUE, GREEN, RED
December 21, 2024 at 11:25 AM
December Solstice - via @eumetsat.bsky.social and @esa

On December 21, 2024, at 10:19 CET, the December solstice occurred, marking a significant astronomical event. During the solstice, the terminator line—the imaginary line dividing day and night—reached its greatest angle
December 21, 2024 at 1:47 PM