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27 minutes ago
WHEN GIANTS STEPPED ON EARTH!🌍
The Giant's Causeway is an area of about 40,000 interlocking basalt columns, the result of an ancient volcanic fissure eruption located in the Northern Ireland. The tops of the columns form stepping stones that lead from the cliff foot and disappear under the sea. Most of the columns are hexagonal, although there are also some with four, five, seven or eight sides. The tallest are about 12 metres (39 ft) high, and the solidified lava in the cliffs is 28 metres (92 ft) thick in places.🍀
Around 50 to 60 million years ago, during the Paleocene Epoch, this area was subject to intense volvanic activity, when highly fluid molten basalt intruded through chalk beds to form an extensive lava plateau. As the lava cooled, contraction occured.🌋
Horizontal contraction fractured in a similar way to drying mud, with the cracks propagating down as the mass cooled, leaving pillarlike structures, which are also fractured horizontally into "biscuits". In many cases the horizontal fracture has resulted in a bottom face that is comvex while the upper face of the lower segment is concave, producing what are called "ball and socket" joints.🏛
The size of the columns is primarily determined by the speed at which lava from a volcanic eruption cools. The extensive fracture network produced the distinctive columns seen today. The basalts were originally part of a great volcanic plateau called the Thulean Plateau which formed during the Paleocene.🗻
1 hour ago
Posted @withrepost • @astronomy_eye The Porpoise galaxy, aka The penguin and the egg 👽
What's happening to this spiral galaxy? Just a few hundred million years ago, NGC 2936, the upper of the two large galaxies shown, was likely a normal spiral galaxy -- spinning, creating stars -- and minding its own business. But then it got too close to the massive elliptical galaxy NGC 2937 below and took a dive. Dubbed the Porpoise Galaxy for its iconic shape, NGC 2936 is not only being deflected but also being distorted by the close gravitational interaction. A burst of young blue stars forms the nose of the porpoise toward the right of the upper galaxy, while the center of the spiral appears as an eye. Alternatively, the galaxy pair, together known as Arp 142, look to some like a penguin protecting an egg. Either way, intricate dark dust lanes and bright blue star streams trail the troubled galaxy to the lower right. The featured re-processed image showing Arp 142 in unprecedented detail was taken by the Hubble Space Telescope last year. Arp 142 lies about 300 million light years away toward the constellation, coincidently, of the Water Snake (Hydra). In a billion years or so the two galaxies will likely merge into one larger galaxy.
Image Credit: NASA, ESA.
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1 hour ago
Scott Joseph Kelly Playing ping pong with water in space! 👨🚀 🔭
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3 hours ago
🌌 NGC 1277 AND ITS SUPERMASSIVE BLACK HOLE! 🕳
👉 NGC 1277 is a #lenticular #galaxy in the #constellation of #Perseus. It is a member of the Perseus Cluster of galaxies and is located approximately 73Mpc (Mega parsecs) or 220 million light years from the Milky Way. It has an apparent magnitude of about 14.7. It was discovered on December 4, 1875 by Lawrence Parsons.Initial observations made using the Hobby-Eberly #Telescope at Texas's McDonald #Observatory suggested the presence of a #blackhole with a mass of about 17 #billion #solar masses, equivalent to 14% of the total stellar mass of the galaxy, due to the motions of the stars near the center of the galaxy. This resulted in the initial claim that the black hole in NGC 1277 is one of the largest known in relation to the mass of its host galaxy.
🌌 NGC 1277 VE SÜPER KÜTLELİ KARADELİĞİ! 🕳️
👉 NGC 1277, Yeni Genel Katalog'da yer alan bir #merceksi galaksidir. Gökyüzünde #Kahraman #takımyıldızı yönünde yaklaşık olarak 218,52 MIy (67 Mpc) uzaklıkta bulunur. İngiliz #astronom Lawrence Parsons tarafından 1875 yılında keşfedilmiştir. 28 Kasım 2012 tarihinde Almanya'daki Max Planck Enstitüsü'ne bağlı gökbilimciler, Teksas McDonald Gözlemevi'ndeki Hobby-Eberly Teleskobu'nu kullanarak diskin galaktik merkezinde süper büyük kütleli bir #karadelik keşfettiler. Bu kara delik, galaksinin toplam yıldız kütlesinin %14'üne eşdeğerdir ve Güneş'ten 17 #milyar kat daha büyüktür.
#lightyears #discovery #astronomer #astronomy #galaksi #güneş #astronomi #space #uzay #universe #evren #cosmos
3 hours ago
before our time is short we must understand that life gives us these heartaches to teach us something for a better path... ask “what is this teaching me?” instead of “why is this happening to me?” and choose all that feels right for a greater life. 🙏🏼🤘🏼
4 hours ago
Have you tried out Google Sky? Google Sky allows users to view stars and other astronomical objects. It was produced by Google through a partnership with the Space Telescope Science Institute, the science operations center for the Hubble Space Telescope. Also visible on Sky mode are constellations, stars, galaxies, and animations depicting the planets in their orbits.
6 hours ago
Today the word satellite widely refers to man-made satellites. However, when the German astronomer Johannes Kepler coined the term “satellite” in 1610 , he used it to describe the bodies orbiting Jupiter. However, Sputnik 1 was the first man-made satellite in space. The Soviet Union launched it in 1957.. Today, The ISS is the biggest satellite in orbit, and took over a decade to construct. (Check out one of our post on ISS to know more on it)
Basically, A satellite is a moon, planet or machine that orbits a planet or star. For example, Earth is a satellite because it orbits the sun. Likewise, the moon is a satellite because it orbits Earth. Usually, the word "satellite" refers to a machine that is launched into space and moves around Earth or another body in space.
Earth and the moon are examples of natural satellites. Thousands of artificial, or man-made, satellites orbit Earth. Satellites can be classified by their function since they are launched into space to do a specific job. Some take pictures of the planet that help meteorologists predict weather and track hurricanes. Some take pictures of other planets, the sun, blackholes, darkmatter or faraway galaxies. These pictures help scientists better understand the solar system and universe.
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7 hours ago
Do we Finally Know the Causes of Sunspots?
Sunspots have been studied for 400 years. Although the effects of their 11-year cycle is well understood, underlying questions remained about how they form. Now, we may have those answers.
Between the end of 1610 and early 1611, several astronomers, including Galileo, independently saw sunspots in their primitive telescopes. Since that time, the features have been closely examined by astronomers around the world.
Sunspots are relatively cool, dark regions on the Sun which form roughly 30 degrees from the stellar equator, and slowly drift closer to the equator over time. As the cycle progresses, sunspots become less common, fading out to a minimum. This cycle repeats every 11 years, although the magnetic orientation of the sunspots flips every other cycle.
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9 hours ago
Check out this original T-Shirt from Astro Locker! 🚀 Link in bio.
9 hours ago
NGC 6866 is an open cluster in the Cygnus constellation, around 3900 light years from earth.
In many aspects, NGC 6866 is your typical open cluster. It's widely spread out, contains stars of various types and sizes etc. One interesting aspect however, is that it contains a fair number of "red clump" stars. Red clump stars are in essence a period in the early phases of a red giant star's life where its core temperature is slightly higher than similar stars not in that phase; while at the same time having the same luminosity (brightness). So why is that?
As you might know, red giants are formed when a main sequence star (like our sun for example) runs out of hydrogen (its fuel) in its core, inflates its outer atmoshere and essentially starts growing in size. Inside its core, it (slowly) stars to fuse helium into carbon as the new "fuel". What's happening in red clump stars is a process known as "helium flash". This is best described as a runaway nuclear fusion, where large quantities of helium are being fused into carbon. The reason for this is that red giants upon their creation do not have sufficient mass to ignite helium fusion through the conventional means (gravitational and thermal pressure). Instead, kinetic forces compact the helium into what's known as degenerate matter, which in turn triggers the helium fusion, getting the process going again. After going through the phase of higher fusion, the star will continue its life as a “normal” red giant.
This is in essence the high level explanation of what happens. If you're really interested in the specifics; the underlying process for this is "quantum mechanical pressure". However, I have absolutely no idea how to go about explaining it in plain english (also because I just barely understand it myself). If you want to give it a try; give the term a quick search and take it from there.
10 hours ago
Crashing waves 🌊 Falling snow ❄️ Blooming flowers 🌻 Fresh air all around 🍃 These are just some of the features that make our Earth so special. For decades we’ve used the vantage point of space to better understand our planet and improve lives. Today we look from the stars once more, this time solely to bask in the beauty of the world we call home. Happy ! Tag someone who would be interested in this!
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Image Credit: NASA
10 hours ago
Beautiful or slightly terrifying 😨
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2 months ago
کره ی زمین گرم تر می شود: دمای کره زمین رفته رفته افزایش پیدا میکند. هرچند دمای کره زمین طی سالیان متمادی با افت و خیز همراه بوده است، اما دانشمندان بر این باورند که دمای کره زمین به سرعت در حال افزایش است. آنها فکر میکنند که افزایش گازهای گلخانهای در جو زمین موجب این افزایش دما بوده است که عمده ترین این گازها را گاز کربن دی اکسید تشکیل میدهد. گاز کربن دی اکسید در اثر سوزاندن سوختهای فسیلی مانند نفت، زغال سنگ و گاز طبیعی تولید میشود.
The planet Earth gets warmer: Earth.Earth's temperature is increasing rapidly. Although the Earth's temperature has been fluctuating over the years, scientists believe that Earth's temperature is rising rapidly. They think that the increase in greenhouse gases in the atmosphere has led to an increase in the temperature, the most important of which is carbon dioxide gas. Carbon dioxide gas is produced by burning fossil fuels such as oil, coal and natural gas.🔥🔥🌎
#space #astronomy #astronomere #nasa #telescope #hubble #star #univers #cosmos #earth #our_home #earth_planet #astronomer #astronomers #gas #hot #carbon_dioxide #atmosphere #waermer