October 20, 2024 at 2:36 AM
This image of NGC 5468, a galaxy located about 130 million light-years from Earth, combines data from the Hubble and James Webb space telescopes. This is the farthest galaxy in which Hubble has identified Cepheid variable stars.
#Astronomy
#Astronomy
February 10, 2025 at 8:55 PM
This image of NGC 5468, a galaxy located about 130 million light-years from Earth, combines data from the Hubble and James Webb space telescopes. This is the farthest galaxy in which Hubble has identified Cepheid variable stars.
#Astronomy
#Astronomy
Henrietta Swan Leavitt was one of the “Harvard Computers.” In the early 1900s, she discovered the relationship between the brightness and period of Cepheid variable stars.
Her discovery gave astronomers a way to measure distances to galaxies and changed our understanding of the universe.
#SheShed
Her discovery gave astronomers a way to measure distances to galaxies and changed our understanding of the universe.
#SheShed
August 3, 2026 at 2:11 PM
Henrietta Swan Leavitt was one of the “Harvard Computers.” In the early 1900s, she discovered the relationship between the brightness and period of Cepheid variable stars.
Her discovery gave astronomers a way to measure distances to galaxies and changed our understanding of the universe.
#SheShed
Her discovery gave astronomers a way to measure distances to galaxies and changed our understanding of the universe.
#SheShed
I'm thinking of releasing a special Halloween demo for my game.
Though maybe that might not be a good idea... a worst idea even.
Though maybe that might not be a good idea... a worst idea even.
October 31, 2024 at 4:45 PM
I'm thinking of releasing a special Halloween demo for my game.
Though maybe that might not be a good idea... a worst idea even.
Though maybe that might not be a good idea... a worst idea even.
VAR!
In the early morning hours #OTD in 1923, Edwin Hubble took a photo plate of M31 that showed a Cepheid variable star.
Using Henrietta Swan Leavitt’s distance-luminosity relationship, Hubble concluded that M31 is another galaxy outside the Milky Way. 🧪 🔭 ⚛️
Image: Carnegie Observatories
In the early morning hours #OTD in 1923, Edwin Hubble took a photo plate of M31 that showed a Cepheid variable star.
Using Henrietta Swan Leavitt’s distance-luminosity relationship, Hubble concluded that M31 is another galaxy outside the Milky Way. 🧪 🔭 ⚛️
Image: Carnegie Observatories
October 6, 2025 at 2:58 PM
VAR!
In the early morning hours #OTD in 1923, Edwin Hubble took a photo plate of M31 that showed a Cepheid variable star.
Using Henrietta Swan Leavitt’s distance-luminosity relationship, Hubble concluded that M31 is another galaxy outside the Milky Way. 🧪 🔭 ⚛️
Image: Carnegie Observatories
In the early morning hours #OTD in 1923, Edwin Hubble took a photo plate of M31 that showed a Cepheid variable star.
Using Henrietta Swan Leavitt’s distance-luminosity relationship, Hubble concluded that M31 is another galaxy outside the Milky Way. 🧪 🔭 ⚛️
Image: Carnegie Observatories
CIRRINA; Tides by Cepheid, Zephyrianna and unit.0
⤷ youtu.be/3F-1Iakc_Ds?...
⤷ youtu.be/3F-1Iakc_Ds?...
December 9, 2024 at 8:57 PM
CIRRINA; Tides by Cepheid, Zephyrianna and unit.0
⤷ youtu.be/3F-1Iakc_Ds?...
⤷ youtu.be/3F-1Iakc_Ds?...
lifetime. Cepheid variables are a class of pulsating star, named for Delta Cephei in the Cepheus constellation. The relationship between a Cepheid variable's luminosity and pulsation period is quite precise. It had not been obvious to tell whether a star was dim because it was less luminous, 🧵3/
July 4, 2024 at 12:19 PM
lifetime. Cepheid variables are a class of pulsating star, named for Delta Cephei in the Cepheus constellation. The relationship between a Cepheid variable's luminosity and pulsation period is quite precise. It had not been obvious to tell whether a star was dim because it was less luminous, 🧵3/
January 10, 2026 at 5:03 PM
September 21, 2025 at 6:12 PM
Merry Christmas! 🎄🎁
🎨: cepheid. baby on ig
🎨: cepheid. baby on ig
December 25, 2024 at 4:39 PM
Merry Christmas! 🎄🎁
🎨: cepheid. baby on ig
🎨: cepheid. baby on ig
Stay tuned, we are hard at work on a Cepheid-based distance to this famous Seyfert galaxy! 🔭
HST two-color view of NGC 1068.
Proposal 17165 / @astronomisty.bsky.social
archive.stsci.edu/proposal_sea...
Some more info, plus links to all the other processing I've done of this galaxy.
flic.kr/p/2rsj7rm
Proposal 17165 / @astronomisty.bsky.social
archive.stsci.edu/proposal_sea...
Some more info, plus links to all the other processing I've done of this galaxy.
flic.kr/p/2rsj7rm
September 9, 2025 at 8:54 PM
Stay tuned, we are hard at work on a Cepheid-based distance to this famous Seyfert galaxy! 🔭
+ #Commission +
I have the honor joining bari(@/bariloaf.bsky.social) 's project and draw the illustration!💙
Cepheid - Chronos / cover by bariloaf
www.youtube.com/watch?v=dd4o...
I have the honor joining bari(@/bariloaf.bsky.social) 's project and draw the illustration!💙
Cepheid - Chronos / cover by bariloaf
www.youtube.com/watch?v=dd4o...
October 18, 2024 at 10:55 AM
+ #Commission +
I have the honor joining bari(@/bariloaf.bsky.social) 's project and draw the illustration!💙
Cepheid - Chronos / cover by bariloaf
www.youtube.com/watch?v=dd4o...
I have the honor joining bari(@/bariloaf.bsky.social) 's project and draw the illustration!💙
Cepheid - Chronos / cover by bariloaf
www.youtube.com/watch?v=dd4o...
That's just what I was thinking, larger errors than the Cepheid calibration of Riess et al, a thing I totally knew about before just now.
Latest results on the expansion rate of the Universe clearly point to … no clarity. The choice of stellar calibrator produces different results for H_0 & all have larger errors than the Cepheid calibration of Riess et al., which comes in at 73 km/s/Mpc, in significant tension with the CMB result. 🧪🔭
August 13, 2024 at 12:16 PM
That's just what I was thinking, larger errors than the Cepheid calibration of Riess et al, a thing I totally knew about before just now.
May 20, 2025 at 4:05 PM
Henrietta Swan was an astronomer. She discovered that a strong direct relationship between a classical Cepheid variable's luminosity & pulsation period could be used for scaling galactic & extragalactic distance.
Her method was used to establish that the universe is expanding.
Her method was used to establish that the universe is expanding.
February 13, 2025 at 10:26 PM
Henrietta Swan was an astronomer. She discovered that a strong direct relationship between a classical Cepheid variable's luminosity & pulsation period could be used for scaling galactic & extragalactic distance.
Her method was used to establish that the universe is expanding.
Her method was used to establish that the universe is expanding.
RS Puppis.
At a distance of 6,000 light-years, the Cepheid variable star was observed by Hubble and is one of the biggest and brightest known Cepheids in the Milky Way galaxy.
Processed by @thocarp.bsky.social
www.flickr.com/photos/19746...
🔭 🧪
At a distance of 6,000 light-years, the Cepheid variable star was observed by Hubble and is one of the biggest and brightest known Cepheids in the Milky Way galaxy.
Processed by @thocarp.bsky.social
www.flickr.com/photos/19746...
🔭 🧪
January 17, 2025 at 9:29 PM
RS Puppis.
At a distance of 6,000 light-years, the Cepheid variable star was observed by Hubble and is one of the biggest and brightest known Cepheids in the Milky Way galaxy.
Processed by @thocarp.bsky.social
www.flickr.com/photos/19746...
🔭 🧪
At a distance of 6,000 light-years, the Cepheid variable star was observed by Hubble and is one of the biggest and brightest known Cepheids in the Milky Way galaxy.
Processed by @thocarp.bsky.social
www.flickr.com/photos/19746...
🔭 🧪
Amidst the April Fools' posts today, a serious #galactic paper about the movement of Cepheid variables in the Small Milky Cloud (SMC) by Satoya Nakano & Kengo Tachihara has found that the SMC is expanding in two different directions! ☄️🧪
(SMC pic credit: @eso.org / VISTA VMC)
(SMC pic credit: @eso.org / VISTA VMC)
April 1, 2025 at 8:21 AM
Cepheid Variable Star in Galaxy M100
Image date: 26 October 1994, 19:00
This Hubble Space Telescope image of a region in the galaxy M100 shows a class of pulsating star called a Cepheid Variable. Though rare, these stars are reliable distance indicators to galaxies.
Credit: Dr. Wendy L. Freedm...
Image date: 26 October 1994, 19:00
This Hubble Space Telescope image of a region in the galaxy M100 shows a class of pulsating star called a Cepheid Variable. Though rare, these stars are reliable distance indicators to galaxies.
Credit: Dr. Wendy L. Freedm...
July 11, 2026 at 12:55 PM
Cepheid Variable Star in Galaxy M100
Image date: 26 October 1994, 19:00
This Hubble Space Telescope image of a region in the galaxy M100 shows a class of pulsating star called a Cepheid Variable. Though rare, these stars are reliable distance indicators to galaxies.
Credit: Dr. Wendy L. Freedm...
Image date: 26 October 1994, 19:00
This Hubble Space Telescope image of a region in the galaxy M100 shows a class of pulsating star called a Cepheid Variable. Though rare, these stars are reliable distance indicators to galaxies.
Credit: Dr. Wendy L. Freedm...
This night 102 years ago, Hubble discovered that there're stars outside our galaxy by observing a Cepheid variable star 1 million light years away
Until barely a century ago, no human ever knew whether there was more than one galaxy in the Universe. Think about that!
Until barely a century ago, no human ever knew whether there was more than one galaxy in the Universe. Think about that!
October 5, 2025 at 7:45 PM
This night 102 years ago, Hubble discovered that there're stars outside our galaxy by observing a Cepheid variable star 1 million light years away
Until barely a century ago, no human ever knew whether there was more than one galaxy in the Universe. Think about that!
Until barely a century ago, no human ever knew whether there was more than one galaxy in the Universe. Think about that!
Hubble's identification of a Cepheid in M31 (left) was a big moment in astrophysics. I tried to find it in my image (right). I think I succeeded with help from here: t.co/YGaK8XCfnt Sadly, Henrietta Swan Leavitt, who discovered the period/luminosity relationship, is not mentioned! #astrophotography
January 1, 2025 at 6:20 PM
Hubble's identification of a Cepheid in M31 (left) was a big moment in astrophysics. I tried to find it in my image (right). I think I succeeded with help from here: t.co/YGaK8XCfnt Sadly, Henrietta Swan Leavitt, who discovered the period/luminosity relationship, is not mentioned! #astrophotography
Discrimination. Edwin Hubble was in charge of the Harvard Observatory. He determined how big the universe was using cepheid variable stars. Except it was assistant Henrietta Leavitt who discovered cepheids. As a woman she wasn't allowed to get a PhD or use the telescope or we might remember her.
February 7, 2025 at 9:22 PM
Discrimination. Edwin Hubble was in charge of the Harvard Observatory. He determined how big the universe was using cepheid variable stars. Except it was assistant Henrietta Leavitt who discovered cepheids. As a woman she wasn't allowed to get a PhD or use the telescope or we might remember her.
Please hold Danaher/Cepheid accountable to make good w/all the public funding they received to develop the Xpert platform & stop price-gouging people who need lifesaving tests! Sign here 👉https://act.citizen.org/page/76363/action/1
Tell Cepheid and Danaher: Lower prices for mpox test to $5
urldefense.proofpoint.com
November 27, 2024 at 1:28 PM
Please hold Danaher/Cepheid accountable to make good w/all the public funding they received to develop the Xpert platform & stop price-gouging people who need lifesaving tests! Sign here 👉https://act.citizen.org/page/76363/action/1
#SecretSantaAoNZ
Washi tape! Just last night I was thinking I really wished I had some to decorate the labels on the gifts I’m wrapping for Christmas.
Washi tape! Just last night I was thinking I really wished I had some to decorate the labels on the gifts I’m wrapping for Christmas.
December 16, 2025 at 6:00 PM
#SecretSantaAoNZ
Washi tape! Just last night I was thinking I really wished I had some to decorate the labels on the gifts I’m wrapping for Christmas.
Washi tape! Just last night I was thinking I really wished I had some to decorate the labels on the gifts I’m wrapping for Christmas.
Task 5 - choose a fitting song for your OC and illustrate them performing it
*cepheid - messenger in flames*
[ #art #illustration #oc ]
*cepheid - messenger in flames*
[ #art #illustration #oc ]
August 5, 2025 at 4:28 PM
Task 5 - choose a fitting song for your OC and illustrate them performing it
*cepheid - messenger in flames*
[ #art #illustration #oc ]
*cepheid - messenger in flames*
[ #art #illustration #oc ]
For folks considering getting a PlusLife Covid testing device:
Comparison of the diagnostic accuracy of the Pluslife Mini Dock RHAM technology with Abbott ID Now and Cepheid GenXpert: A retrospective evaluation study (June 2024)
www.nature.com/articles/s41...
Comparison of the diagnostic accuracy of the Pluslife Mini Dock RHAM technology with Abbott ID Now and Cepheid GenXpert: A retrospective evaluation study (June 2024)
www.nature.com/articles/s41...
Comparison of the diagnostic accuracy of the Pluslife Mini Dock RHAM technology with Abbott ID Now and Cepheid GenXpert: A retrospective evaluation study - Scientific Reports
Scientific Reports - Comparison of the diagnostic accuracy of the Pluslife Mini Dock RHAM technology with Abbott ID Now and Cepheid GenXpert: A retrospective evaluation study
www.nature.com
October 18, 2024 at 3:27 PM
For folks considering getting a PlusLife Covid testing device:
Comparison of the diagnostic accuracy of the Pluslife Mini Dock RHAM technology with Abbott ID Now and Cepheid GenXpert: A retrospective evaluation study (June 2024)
www.nature.com/articles/s41...
Comparison of the diagnostic accuracy of the Pluslife Mini Dock RHAM technology with Abbott ID Now and Cepheid GenXpert: A retrospective evaluation study (June 2024)
www.nature.com/articles/s41...