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Items tagged with: astronomy
If we ever find this squiggly line, it will be one of the greatest discoveries in the history of exploration. It's the spectral signal of a habitable, truly Earthlike planet.
Spotting it won't be easy, but the JWST observatory is looking now.
https://blogs.nasa.gov/webb/2024/06/05/reconnaissance-of-potentially-habitable-worlds-with-nasas-webb/ #space #science #nasa #astronomy #life #aliens
Belgian physicist, mathematician, astronomer Georges Lemaître died #OTD in 1966.
He was the 1st to theorize that the recession of nearby galaxies can be explained by an expanding universe, which was observationally confirmed soon afterwards by Hubble. He 1st derived the Hubble–Lemaître law. He also proposed the "Big Bang theory" of the origin of the universe, calling it the "hypothesis of the primeval atom", and later calling it "the beginning of the world".
https://en.wikipedia.org/wiki/Georges_Lema%C3%AEtre
New Instance , new (ish) #Introduction
Ex mainframe (IBM) Storage Manager / Installations bod.
Now part time hermit with #Depression, #ActuallyAutistic
Channel #MarvinTheParanoidAndroid
Massive #TerryPratchett & #DouglasAdams fan.
Love #Scifi #Fantasy #Reading #Movies
Interested in #Physics #Astronomy #Photograpy but rubbish at all of them.
Believe in #ClimateChange #BigBangTheory
Lean to the left & am definitely #Woke
Will drive you insane if you let me !🤣
Humaning is hard , so am Squirrel.
I'm sad to report the death of Ed Stone, the NASA scientist who was the heart & soul of the Voyager program. Spending time with him for my Discover magazine profile was a highlight of my career.
I did my best to capture the experience:
https://www.discovermagazine.com/the-sciences/voyager-the-man-behind-the-mission #science #space #nasa #astronomy
Voyager: The Man Behind the Mission
Ed Stone’s relentless pursuit of the frontier has taken him to the edge of the solar system — and beyond.Corey S Powell (Discover Magazine)
Italian mathematician, astronomer and engineer Giovanni Domenico Cassini was born #OTD in 1625.
His observations & calculations helped to confirm & refine Kepler’s laws of planetary motion. He formulated Cassini’s Law, describing the rotational behavior of the Moon, which was crucial for understanding the Moon's synchronous rotation with the Earth. He was involved in measuring the meridian arc of Paris, contributing to the accurate determination of the shape of the Earth.
https://www.sciencealert.com/japanese-company-plans-to-build-a-tower-into-space-by-2050 #astronomy #SpaceTravel #SpaceElevator #Japan #nanotubes
Japanese Company Plans to Build a Tower Into Space by 2050 : ScienceAlert
Imagine a long tether linking Earth to space that could launch us to orbit at a fraction of the cost and slingshot us to other worlds at record speed.Business Insider (ScienceAlert)
Love this as an opening for a paper. Love to study my sky vermins.
(The paper: https://arxiv.org/pdf/2403.20179)
This is a good paper. And it has this absolute banger of an appendix.
Edit: this post is getting more attention than the one before it, so to clarify this is Carry et al. 2024, here is the paper link again: https://arxiv.org/pdf/2403.20179
![Screenshot of a paper:
Appendix A: Good bet, Mr Clarke!
"On Day 86 they were due to make their closest approach to any known asteroid, It had no name - merely the number 7794 [...] Through the high-powered telescope, they could see that the asteroid was very irregular, and turning slowly end over end. Sometimes it looked like a flattened sphere, sometimes it resembled a roughly shaped block; [...]" - Arthur C. Clarke, 2001 — A Space Odyssey
In the 1968 Arthur C. Clarke book, 2001 — A Space Odyssey, the author describes the observation of the asteroid 7794 from a flyby (which would be discovered only in 1996), predicting that this asteroid "looked like a flattened sphere”. Using the most recent data from FINK (version 2024.01, see Sect. 6, we found a value for the oblateness around 0.5, favouring the prediction made in the book. The parameter estimate has still a large uncertainty though, but given the residuals in the phase curve, we can infer that either the asteroid is irregular along its equator (a # b) or there could be an extra unmodelled activity.](https://friendica.hellquist.eu/photo/preview/640/2825873 "Screenshot of a paper:
Appendix A: Good bet, Mr Clarke!
\"On Day 86 they were due to make their closest approach to any known asteroid, It had no name - merely the number 7794 [...] Through the high-powered telescope, they could see that the asteroid was very irregular, and turning slowly end over end. Sometimes it looked like a flattened sphere, sometimes it resembled a roughly shaped block; [...]\" - Arthur C. Clarke, 2001 — A Space Odyssey
In the 1968 Arthur C. Clarke book, 2001 — A Space Odyssey, the author describes the observation of the asteroid 7794 from a flyby (which would be discovered only in 1996), predicting that this asteroid \"looked like a flattened sphere”. Using the most recent data from FINK (version 2024.01, see Sect. 6, we found a value for the oblateness around 0.5, favouring the prediction made in the book. The parameter estimate has still a large uncertainty though, but given the residuals in the phase curve, we can infer that either the asteroid is irregular along its equator (a # b) or there could be an extra unmodelled activity.")
Astronomers used to pack up their telescopes when the sun came up, but researchers at Macquarie University have developed a new technique for observing celestial objects during the day.
The Huntsman Telescope could allow around-the-clock visual monitoring of satellites, which would significantly improve safety on Earth and in space.
Discover the technical side and see stars during the day…https://ausgeo.co/huntsmantelescope
#ausgeo #australia #space #stars #astronomy #macquarieuniversity #science #telescope #earth #satellite #moon #technology #science #astro #outerspace #tech
#academia #research #academicchatter #science #scientist #space #astronomy #astrodon #technology #technews #tech
Stargazing in broad daylight
Astronomers from Macquarie University have pioneered a new technique using the Huntsman Telescope to observe celestial objects during the day.Candice Marshall (Australian Geographic)
It's #MilkyWay season again here in the northern hemisphere.
I took this image using my phone last night around 2am looking south from my moderately light-polluted site in east Tucson. 5×90s subs captured in Astroshader were combined in Siril. A final stretch was applied in GIMP.
I'm pretty happy with the result.
6-planet alignment happening on June 3!
https://www.perplexity.ai/search/planetary-alignment-UY2EJ8_4ScmZELJ5FNkUHQ
"How it started/how it's going," space edition:
On March 17, 2013 a flash appeared on the Moon. It was bright enough to see with the naked eye.
Now we can see the result: a new 18-meter-wide crater, blasted out by a watermelon-size meteoroid.
https://www.lroc.asu.edu/featured_sites/40 #science #space #NASA #astronomy #Moon
#OTD in 1919.
Albert Einstein's theory of general relativity is tested by Arthur Eddington and Andrew Claude de la Cherois Crommelin.
The Eddington experiment was organised by the astronomers Frank Watson Dyson & Arthur Stanley Eddington in 1919. The observations were of the total solar eclipse of 29 May 1919 and were carried out by two expeditions which aim was to measure the gravitational deflection of starlight passing near the Sun.
https://en.wikipedia.org/wiki/Eddington_experiment
#science #relativity #astronomy
#Stairway to the #MilkyWay
#Astronomy #Picture of the Day
https://apod.nasa.gov/apod/ap240529.html
#APOD
APOD: 2024 May 29 – Stairway to the Milky Way
A different astronomy and space science related image is featured each day, along with a brief explanation.apod.nasa.gov
Now we'll be lucky if this good science gets 10% the press that the original did.
Background Contamination of the Project Hephaistos Dyson Spheres Candidates
Project Hephaistos recently identified seven M-dwarfs as possible Dyson Spheres (DS) candidates. We have cross-matched three of these candidates (A, B \& G) with radio sources detected in various all-sky surveys.arXiv.org
Phobos over Mars - Terra Cimmeria
Full size: https://flic.kr/p/2pTBo8a
B&W Version: https://flic.kr/p/2pW7Vg9
Location: https://www.uahirise.org/hiwish/view/135056
Colourised animation processing data from: https://psa.esa.int
ESA Mars Express HRSC
Orbit: 14388
2015-05-05 T16:01:18 > T16:01:35.424Z
IDs: 5 Frames
HE388_0003_SR3 >>>> HE388_0007_SR3
1 frame added to make it smoother
Credits:
Raw Data:
ESA/DLR/G.Neukum-FUBerlin
Processing: AndreaLuck CC BY
#Space #Astronomy #Mars #Astrodon #Spacetodon #Solarocks
VIDEO - Phobos over Mars, Terra Cimmeria - ESA Mars Express
Credits: Raw Data: ESA/DLR/G.Neukum-FUBerlin Processing: AndreaLuck CC BY Download: www.flickr.com/video_download.gne?id=53777338834 Colourised version: flic.kr/p/2pTBo8a Location on map: www.uahirise.Flickr
