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hourlycosmos.bsky.social
Hourly Cosmos
@hourlycosmos.bsky.social
10K followers 13 following 6.8K posts
Photo sharing bot for planetary and deep space images.

Run by @kevinmgill.bsky.social

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hourlycosmos.bsky.social
8/21/2017 Eclipse, DSC02044 - From Brian Swift (bswift.bsky.social) - https://flic.kr/p/Y3rvEh
November 29, 2025 at 5:00 AM
hourlycosmos.bsky.social
DAWN MISSION VESTA (2) - From Jacint Roger (landru79.bsky.social) - https://flic.kr/p/2iPWPtj
DAWN MISSION VESTA NASA/j.Roger
November 29, 2025 at 4:01 AM
hourlycosmos.bsky.social
CP18_41_19_1 - From Brian Swift (bswift.bsky.social) - https://flic.kr/p/24gPMNe
Credit: NASA/JPL-Caltech/SwRI/MSSS/Brian Swift
November 29, 2025 at 3:00 AM
hourlycosmos.bsky.social
Opportunity (59) - From Jacint Roger (landru79.bsky.social) - https://flic.kr/p/2iKTFiC
Opportunity MARS NASA / JPL-Caltech / Cornell / j. Roger
November 29, 2025 at 1:00 AM
hourlycosmos.bsky.social
Earth & Moon, full animation - 17 years ago - From Gordan Ugarković (ugordan.bsky.social) - https://flic.kr/p/7pbLC2
54 color frames animated showing the Earth-Moon conjunction as seen from the receding Galileo spacecraft on 16/17 Dec 1992. At the start, Galileo is 6.15 million km from the Earth. That increased to 6.58 million km at the end. Since the Moon orbits the Earth at less than 400 thousand km, that makes it only 6% closer to Galileo in this sequence. As a result, the sequence is a pretty good comparison of relative Earth-Moon sizes. Click [Actions -> View all sizes -> original] to animate (8 MB). An interpolated AVI video can be found here (4 MB).
November 29, 2025 at 12:00 AM
hourlycosmos.bsky.social
curiosity sol 56 Mastcam R - From 2di7 & titanio44 - https://flic.kr/p/dgVTGU
"Courtesy NASA/JPL -Caltech" processing 2di7 & titanio44
November 28, 2025 at 11:00 PM
hourlycosmos.bsky.social
8/21/2017 Eclipse, DSC02009 - From Brian Swift (bswift.bsky.social) - https://flic.kr/p/Y3rvK7
November 28, 2025 at 10:00 PM
hourlycosmos.bsky.social
C3492825 CLEAR-VIOLET - From Ian Regan - https://flic.kr/p/2kbxcUG
A view of #Saturn, taken by #Voyager1 just prior to closest approach on November 12th, 1980. Visible in this NAC composite are the inner rings, their shadows, and the planet's hazy pastel limb.
November 28, 2025 at 9:00 PM
hourlycosmos.bsky.social
From Orbit, Looking toward Mercury's Horizon - From Goddard Space Flight Center - https://flic.kr/p/9uNkEs
NASA image acquired: March 29, 2011 MESSENGER acquired this image of Mercury's horizon as the spacecraft was moving northward along the first orbit during which MDIS was turned on. Bright rays from Hokusai can be seen running north to south in the image. MDIS frequently acquired images that contained Mercury's horizon during the mission's three Mercury flybys. (Visit these links to see examples of horizon images from Mercury flyby 1, Mercury flyby 2, and Mercury flyby 3.) However, now that MESSENGER is in orbit about Mercury, views of Mercury's horizon in the images will be much less common. The field of view for MDIS will generally be filled with Mercury's surface as the instrument maps out the planet's geology in high resolution, stereo, and color. Occasionally, in order to obtain images of a certain portion of Mercury's surface, the horizon will also be visible. On March 17, 2011 (March 18, 2011, UTC), MESSENGER became the first spacecraft to orbit the planet Mercury. The mission is currently in its commissioning phase, during which spacecraft and instrument performance are verified through a series of specially designed checkout activities. In the course of the one-year primary mission, the spacecraft's seven scientific instruments and radio science investigation will unravel the history and evolution of the Solar System's innermost planet. Visit the Why Mercury? section of this website to learn more about the science questions that the MESSENGER mission has set out ...
November 28, 2025 at 8:00 PM
hourlycosmos.bsky.social
Astro Pro-Am: Professional and Amateur Astronomers Join Forces - From Rolf Wahl Olsen - https://flic.kr/p/nhBUCh
Collaboration with NASA's Chandra X-ray Observatory Center This image is the result of a collaboration between NASA's Chandra X-ray Observatory Center and amateur astrophotographer Rolf Wahl Olsen. It is part of a series of professional-amateur collaboration images and was combined by Science Imager Joseph DePasquale from Chandra X-ray Observatory Center, using both X-ray, optical and infrared data. The image is composed of the following data: My deep 120 hour optical image Centaurus A Extreme Deep Field taken over 43 nights in 2013. 230 hours of Chandra X-ray data gathered over the past 15 years. Infrared data from NASA's Spitzer Space Telescope. The combined exposure time is in excess of an astonishing 350 hours, or two weeks; more than the Hubble Ultra Deep Field. Below are links to the official press releases including the other spectacular images in the series (M101, M81 and M51) with optical data by German astrophotographer Detlef Hartmann: Chandra Press Release Spitzer Press Release Individual images for download For full details on the Centaurus A Extreme Deep Field project please visit my Centaurus A gallery If you are an amateur astrophotographer, or even just an 'armchair astronomer', and would like to get involved with astronomical research then the International Astronomical Union has an excellent page with information on how to get involved in citizen science projects or Pro-Am collaborations. (Centaurus A Pro-Am image credit: X-ray: NASA/CXC/SAO; Op...
November 28, 2025 at 6:00 PM
hourlycosmos.bsky.social
A glimpse into Belva crater - Ingenuity, sol 763, flight 50 - From Thomas Appéré (thomasappere.bsky.social) - https://flic.kr/p/2otNDpY
Picture taken by RTE camera aboard Ingenuity helicopter during flight 50 on sol 763 (April 13, 2023) at 15:07:04 Martian local time.
November 28, 2025 at 5:00 PM
hourlycosmos.bsky.social
Narrowband NGC 3293 - The Gem Cluster - From Rolf Wahl Olsen - https://flic.kr/p/2pSMtxp
NGC 3293, often referred to as the Gem Cluster, is a spectacular bright open star cluster located in the constellation of Carina. In this narrowband bicolour image the delicate nebulosity across the entire background really stands out. It is one of the Southern Sky's finest binocular objects and consists of nearly one hundred stars huddled together in a tight group, with a contrasting bright red supergiant near it's centre - similar in appearance to Kappa Crucis in the Jewel Box Cluster. Floating against a colourful backdrop of Milky Way stars and red Hydrogen emission, the cluster is also surrounded by a delicate faint blue haze visible in broadband images. The cluster was discovered by Abbé Nicolas Louis de La Caille in 1752 during his expedition to the Cape of Good Hope in South Africa. Image details: Date: April - May 2022 Exposure: H-Alpha OIII: 405:540 mins, total 15 hours 45 mins @ -25C Telescope: Homebuilt 12.5" f/4 Serrurier Truss Newtonian Camera: QSI 683wsg with Lodestar guider Filters: Astrodon 3nm Ha OIII Taken from my observatory in Auckland, New Zealand
November 28, 2025 at 4:00 PM
hourlycosmos.bsky.social
Deimos Over Mars, Terra Sabaea - ESA Hera Mission - From Andrea Luck (andrealuck.bsky.social) - https://flic.kr/p/2qRV5QD
Download full size image: www.flickr.com/photos/192271236@N03/54386120493/sizes/o/ Credit: ESA/AFC/DLR/FUBerlin/AndreaLuck CC BY Colourised image processed from: www.esa.int/Space_Safety/Hera/Hera_asteroid_mission_spies... For the colourisation, I've used a reference image from ESA's Mars Express of this area: HO544_000 in RGB, taken on 2023-06-09 (raw data available at psa.esa.int/) check out the image here: flic.kr/p/2qRZbDK Mission: ESA Hera Instrument: Asteroid Framing Cameras (AFC) Distance: 1000 KM Date: March 12, 2025 Credit: ESA/AFC/DLR/FUBerlin/AndreaLuck CC BY Feel free to share, giving the appropriate credit as stated above and providing a link to the original media: creativecommons.org/licenses/by/3.0
November 28, 2025 at 3:00 PM
hourlycosmos.bsky.social
The Life-Gifted Planet - From Bill (ridingrobots.bsky.social) - https://flic.kr/p/2mgomcU
The only one we know. Bryce Canyon National Park, Utah
November 28, 2025 at 2:00 PM
hourlycosmos.bsky.social
ESP_052671_2330 - From UAHiRISE (NASA) (uahirise.bsky.social) - https://flic.kr/p/MLuy5E
Wayward in Perepelkin Crater — This crater is very old and mostly filled-in with material. It’s 112 kilometer in diameter and named after Soviet astronomer Yevgeny Perepyolkin. NASA/JPL/University of Arizona (307 km above the surface, less than 1 km top to bottom and north is approximately to the left) Source: www.uahirise.org/ESP_052671_2330 ​
November 28, 2025 at 1:00 PM
hourlycosmos.bsky.social
Clouds on late afternoon - sol 3043 - From Thomas Appéré (thomasappere.bsky.social) - https://flic.kr/p/2kFu94b
Animation of 4 pictures taken with Navcam Right camera of Curiosity rover on sol 3043 (27 February 2021). Pictures were taken between 6:05 pm and 6:06 pm martian local time with a timelapse of about 30 seconds between each frame. Watch the animation here: www.flickr.com/photos/thomasappere/50986304712/sizes/o/ ------------------------------------------------------------------------------------------------- Animation réalisée à partir de 4 photos prises par la caméra Navcam Droite du rover Curiosity au sol 3043 (27 février 2021). Les images ont été prises entre 18h05 et 18h06 avec un écart d'environ 30 secondes entre chaque image. Visionnez l'animation ici: www.flickr.com/photos/thomasappere/50986304712/sizes/o/
November 28, 2025 at 12:00 PM
hourlycosmos.bsky.social
'Earhart' Propeller in Saturn's A Ring - From NASA Marshall Space Flight Center - https://flic.kr/p/ThgAGd
'Earhart' Propeller in Saturn's A Ring The propeller informally named "Earhart" is seen in this view from NASA's Cassini spacecraft at much higher resolution than ever before. This view, obtained on March 22, 2017, is the second time Cassini has deliberately targeted an individual propeller for close-up viewing during its ring-grazing orbits, after its images of Santos-Dumont (PIA21433) a month earlier. The biggest known propeller, informally named "Bleriot," is slated for the third and final propeller close-up in April 2017. Propellers are disturbances in the ring caused by a central moonlet. The moonlet itself would be a few pixels wide in this view, but it is difficult to distinguish from (and may be obscured by) the disturbed ring material that surrounds it. (See PIA20525 for more info on propellers.) The detailed structure of the Earhart propeller, as seen here, differs from that of Santos-Dumont. It is not clear whether these differences have to do with intrinsic differences between Earhart and Santos-Dumont, or whether they have to do with different viewing angles or differences in where the propellers were imaged in their orbits around Saturn. Image credit: NASA/JPL-Caltech/Space Science Institute Read more NASA Media Usage Guidelines
November 28, 2025 at 10:00 AM
hourlycosmos.bsky.social
Acadia National Park - From NASA Marshall Space Flight Center - https://flic.kr/p/KD85uc
Acadia National Park is one of the most visited parks in America, drawing more than 2.5 million visitors per year to the craggy, jagged coast of Maine. The park is celebrating its 100th anniversary in 2016. On September 6, 2015, the Operational Land Imager (OLI) on the Landsat 8 satellite acquired these images of Acadia National Park and its surroundings. Mountains and hills roll right up to the Atlantic Ocean in this rocky landscape carved by glaciers at the end of the last Ice Age. Since the beginning of the 20th Century, the park has been pieced together by donations and acquisitions of once-private lands, and it is still growing. Of the park’s 47,000 acres, more than 12,000 are privately owned lands under conservation agreements, while the rest is held by the National Park Service. Mount Desert Island is the focal point of the park, which also includes lands around a former naval base (Schoodic Peninsula), Isle au Haut, and several smaller islands. Mount Desert Island is the largest in Maine and the second largest on the East Coast. “It looks like a big lobster claw,” said Lynne Dominy, chief park ranger for interpretation at Acadia. “It's both ironic and iconic, as we are surrounded by lobsters living in the Gulf of Maine.” Efforts to preserve Acadia began around 1901, led by conservationist George Dorr, who began cobbling together acquisitions and donations of land. Dorr and the Hancock County Trustees of Public Reservations turned over 6,000 acres to the U.S. gov...
November 28, 2025 at 9:00 AM
hourlycosmos.bsky.social
ROSETTA (10) - From Jacint Roger (landru79.bsky.social) - https://flic.kr/p/2iKjMVW
INTERNATIONAL ROSETTA MISSION COMET 67P/CHURYUMOV-GERASIMENKO ESA/Rosetta/MPS/OSIRIS/IAA/INTA/j. Roger
November 28, 2025 at 8:00 AM
hourlycosmos.bsky.social
Enceladus in the E Ring - From Val Klavans (valklavans.bsky.social) - https://flic.kr/p/fpHjw2
On July 19, 2013, you waved at Saturn. The Cassini spacecraft was there to snap a photo of not only us, but the Saturn system. Here's Cassini's view of Enceladus within Saturn's E ring on that day. (Enceladus is actually forming Saturn's E ring. More details can be found here: Tiny Icy Moon 'Feeds' Giant Saturn Ring) These images were taken on July 19, 2013 and received on Earth July 20, 2013. The camera was pointing toward SATURN-ERING at approximately 742,417 miles (1,194,805 kilometers) away, and the images were taken using the CL1, RED, BL1 and GRN filters. Credit: NASA / JPL / SSI / composite by Val Klavans
November 28, 2025 at 6:00 AM
hourlycosmos.bsky.social
ESP_023024_1685 - From UAHiRISE (NASA) (uahirise.bsky.social) - https://flic.kr/p/eftJ5B
November 28, 2025 at 5:00 AM
hourlycosmos.bsky.social
ESP_014436_0920 - From UAHiRISE (NASA) (uahirise.bsky.social) - https://flic.kr/p/dZHdAt
November 28, 2025 at 4:00 AM
hourlycosmos.bsky.social
ESP_022607_1725 - From UAHiRISE (NASA) (uahirise.bsky.social) - https://flic.kr/p/efdMrG
November 28, 2025 at 3:00 AM
hourlycosmos.bsky.social
Plumes - From Gordan Ugarković (ugordan.bsky.social) - https://flic.kr/p/8wsQRV
Galileo SSI image. Full resolution green frame combined with 1/2 resolution red and violet frames and processed to approximate natural color. As with the majority of Galileo images, this observation employed a lossy compression scheme due to the high gain antenna problem so compression artifacts are abundant. C9ISSRFMON02.
November 28, 2025 at 2:00 AM
hourlycosmos.bsky.social
Spiral Jetty - From Bill (ridingrobots.bsky.social) - https://flic.kr/p/2jFXcNV
Robert Smithson created the stone artwork "Spiral Jetty" 50 years ago at Rozel Point peninsula, on the shore of the Great Salt Lake. Its spiral shape is easy to see from above, but it looks like a straight line when seen from ground level. The Milky Way also has a spiral shape, but we see it as a straight line from our vantage point inside its disc. Sept. 10, 2020
November 28, 2025 at 1:00 AM