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#astronomy

237 posts163 participants1 post today
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One year ago, my visit to Sierra Madera impact crater in West Texas was my second time there. On my first visit in 2007, I took pictures which are now displayed on the Wikipedia page about the crater. It was the 2nd confirmed impact site I had visited (after Meteor Crater AZ) out of a total of 10 now. en.wikipedia.org/wiki/Sierra_M #astronomy #geology #space #spacegeek #travel

en.wikipedia.orgSierra Madera crater - Wikipedia
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A year ago on the return trip from #SolarEclipse2024, I posted a picture (which I took the previous day) of the Sierra Madera impact crater near Fort Stockton, Texas. The crater is 8mi/13km wide and US Hwy 385 goes through the middle of it. But the highway is the only spot you can see it since the rest of the crater is private property. So it was easy to keep the stop quick, take a few pictures and continue the drive. spacey.space/@AstroHawk/112258 #astronomy #geology #space #spacegeek #travel

Spacey SpaceAstro Hawk (Ian Kluft) 🚀🛰️ (@AstroHawk@spacey.space)Attached: 2 images One more #space related landmark as last stop before leaving Texas on my #SolarEclipse2024 trip... I made my second visit to the Sierra Madera impact crater. It's 8mi/13km across. If you look up the Wikipedia page, it has a picture from my first time there. #astronomy #geology
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A year ago I was on the drive back home on the #SolarEclipse2024 road trip. From the far point of the trip in Houston, I made some more #space related stops on the way home: Sierra Madera impact crater near Fort Stockton TX, NSF's Very Large Array radiotelescope near Socorro NM and Meteor Crater near Flagstaff AZ. Overnight stops were at Austin TX, Las Cruces NM, Flagstaff AZ and Brigham City UT. #astronomy #space #spacegeek #travel

#UMPlus - Planetary Nebula PN K 4-55

universomagico.net/2025/04/neb

This image, taken by the Hubble Space Telescope, shows the planetary nebula PN K 4-55. Published in Universo Mágico in 2022, but recently reprocessed, it bears a certain resemblance to a parrot's eye. The swirling clouds in this stunning image seem surreal. What we are seeing are vast clouds of ionized.....
#astronomy #space #astrophysics #astrophotography

On this day, six years ago, on 12 April 2019, both @LIGO instruments and the Virgo detector observed the gravitational-wave signal GW190412.

It was a signal like none before, because GW190412 was the first to come from two merging black holes with very different masses. Never-before-heard overtones in the frequencies of the gravitational-wave were observed. These also allowed a more precise determination of the properties of the two black holes.

ℹ️ aei.mpg.de/213678/a-signal-lik

About a year later (on 20 April 2020), the paper with all the details of the discovery was published.

📄 journals.aps.org/prd/abstract/ [Open Access]

Did you know that the Moon has a tail made of sodium atoms? It's not visible to the naked eye, but during the New Moon and under the right conditions, some astronomical instruments can detect a faint tail stretching thousands of kilometers into space.

#Moon #Lunar #SodiumTail #Observing #Telescope #AllanICarswellObservatory #YorkU #Toronto #Ontario #Astronomy #Astronomer #Science #Astrophotography #SpaceScienceSaturday