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Science by Guff

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@Science: The universe as we know it.

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On May 4, 2018 a 6.9 magnitude earthquake hit the Big Island of Hawaii, where 24 fissures opened up and erupted lava. Fissure #22 at one point was erupting at 28,000 gallons per second. The lava entered the Kapoho Crater, and evaporated Green Lake, Hawaii's largest freshwater lake. The eruption also created approximately 875 acres of new land.
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πŸ“· @mikepereaphotography
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#science #volcano #hawaii #earthquake #kapohocrater #volcanology.

On May 4, 2018 a 6.9 magnitude earthquake hit the Big Island of Hawaii, where 24 fissures opened up and erupted lava. Fissure #22 at one point was erupting at 28,000 gallons per second. The lava entered the Kapoho Crater, and evaporated Green Lake, Hawaii's largest freshwater lake. The eruption also created approximately 875 acres of new land. . πŸ“· @mikepereaphotography . #science #volcano #hawaii #earthquake #kapohocrater #volcanology ...

Big thanks to @mdhealthtips for this post on chromosomes and aging. .

In each of our cells, we have 46 strands of DNA coiled into chromosomes. At the tip of each chromosome, there's a tiny cap called a telomere, which keeps our DNA from unraveling and fraying (kinda like the tips of shoelaces). But every time our cells divide, a bit of that cap is lost. And when that telomere is completely gone, our cells can die. .

We can think of telomeres as our life

Big thanks to @mdhealthtips for this post on chromosomes and aging. . In each of our cells, we have 46 strands of DNA coiled into chromosomes. At the tip of each chromosome, there's a tiny cap called a telomere, which keeps our DNA from unraveling and fraying (kinda like the tips of shoelaces). But every time our cells divide, a bit of that cap is lost. And when that telomere is completely gone, our cells can die. . We can think of telomeres as our life "fuse": they start shortening as soon as we're born, and when they’re gone, we're gone. In fact, forensic scientists can take DNA from a bloodstain and roughly estimate how old the person was based on how long their telomeres were (😱) . So is there anything we can avoid to prevent these telomere caps from burning away? Well, staying away from smoking!... smoking cigarettes is associated with triple the rate of telomere loss. 😷❌😷 And what can we do to keep them long? That answer lies in our diet: the consumption of fruits πŸ‡, veggies🌱, and other antioxidant-rich foods... These have all been associated with longer protective telomeres. Crazy how far lifestyle changes alone can take us...even at a subcellular level πŸ’ͺ . Thx, @mdhealthtips ! . #science #chromosomes #aging #dna #telomeres #smoking #diet #health ...

Give a DOUBLE-TAP if you believe human-driven climate change is real. 🌎  image cred: @attndotcom

#science #climatechange #globalwarming #facts.

Give a DOUBLE-TAP if you believe human-driven climate change is real. 🌎 image cred: @attndotcom #science #climatechange #globalwarming #facts ...

Courtesy of @mdhealthtips ... Cross section through a REAL artery, showing atherosclerosis in the arterial wall
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The process of atherosclerosis, or fatty plaque deposition in blood vessels, starts in our preteen years (😱). And it allll boils down to cholesterol. So let's describe it.
We actually need cholesterol; it's used by all our cells in their membranes! Our bodies have thus devised ways to transport cholesterol within our vessels, by binding it to transporters called lipoproteins. The 2 main cholesterol transporters are LDL (low density lipoprotein) aka the

Courtesy of @mdhealthtips ... Cross section through a REAL artery, showing atherosclerosis in the arterial wall . The process of atherosclerosis, or fatty plaque deposition in blood vessels, starts in our preteen years (😱). And it allll boils down to cholesterol. So let's describe it. We actually need cholesterol; it's used by all our cells in their membranes! Our bodies have thus devised ways to transport cholesterol within our vessels, by binding it to transporters called lipoproteins. The 2 main cholesterol transporters are LDL (low density lipoprotein) aka the "bad cholesterol number" πŸ‘ŽπŸ˜¬, and HDL (high density lipoprotein) which we call the "good cholesterol number" πŸ‘πŸ˜„. . Why is LDL bad and HDL good?? Well, to reach cells throughout the body, cholesterol must move through blood vessel walls. It enters the vessel wall as part of LDL... and exits as a part of HDL. Cholesterol trapping in the vessel wall reflects the balance between transport in and transport out, between LDL and HDL. When too much cholesterol enters the wall, it turns rancid, getting oxidized and causing the inflammatory cascade leading to permanent fatty plaque deposition. We know these fatty plaques to be the culprits behind heart attacks and strokes, causing blood clots, starving the heart or brain of oxygen needed to survive. . We can lower our LDL levels through a diet low in saturated fat and high in fiber (fiber actually binds cholesterol in our guts, preventing its absorption) πŸπŸ‘πŸ. Best way to raise HDL? Exercise! - especially through aerobic cardio β˜€οΈπŸŒŠπŸ„. Oh, and the endorphin release is a nice bonus! Via @mdhealthtips ...

(via @NASA) Behold: The beauty of our home planet! 😍 The orange hue surrounding Earth, known as airglow, diffuse bands of light that stretch 50 to 400 miles into our atmosphere.

Airglow reveals some workings of the upper reaches of our atmosphere. It can help scientists learn about the movement of particles near the interface of Earth and space, including the connections between space weather and Earth weather. Satellites offer one way to study this dynamic zone. Our Ionospheric Connection Explorer satellite that launches early in the morning of Nov. 7 will help scientists understand the physical processes at work where Earth’s atmosphere interacts with near-Earth space.

Credit: NASA

#nasa #earth #science #earth #home #spacestation #space #astronaut #icon #airglow.

(via @NASA ) Behold: The beauty of our home planet! 😍 The orange hue surrounding Earth, known as airglow, diffuse bands of light that stretch 50 to 400 miles into our atmosphere. Airglow reveals some workings of the upper reaches of our atmosphere. It can help scientists learn about the movement of particles near the interface of Earth and space, including the connections between space weather and Earth weather. Satellites offer one way to study this dynamic zone. Our Ionospheric Connection Explorer satellite that launches early in the morning of Nov. 7 will help scientists understand the physical processes at work where Earth’s atmosphere interacts with near-Earth space. Credit: NASA #nasa #earth #science #earth #home #spacestation #space #astronaut #icon #airglow ...

The human brain (thx, @mdhealthtips !).
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The human brain is the most complex mass of protoplasm on earth β€” perhaps even in our galaxy. A product of heredity and environment, operative for many tens of millions of years, this three-pound collection of cells is still of virtually unknown potential; yet what a history of achievement and what incredible promise for the future!... No other group of cells sends travelers to the moon and soon beyond, reengineers genes, produces a Mozart sonata or a Turner Landscape. But what’s the most significant achievement of this organ small enough to be held in our hands? I'd say the ability of the brain to change in response to cultural diversity β€” with measurable chemical and structural changes. Yea... our brains literally add nerve cell branches in response to training and learning, no matter what our age. Conversely, the brain is learning to reshape the environment in which we live and will both benefit from and suffer the consequences as it does.
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πŸ“·  Arnold Scheibel, MD
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#science #anatomy #humanbrain #cells #wow #incredible.

The human brain (thx, @mdhealthtips !). . The human brain is the most complex mass of protoplasm on earth β€” perhaps even in our galaxy. A product of heredity and environment, operative for many tens of millions of years, this three-pound collection of cells is still of virtually unknown potential; yet what a history of achievement and what incredible promise for the future!... No other group of cells sends travelers to the moon and soon beyond, reengineers genes, produces a Mozart sonata or a Turner Landscape. But what’s the most significant achievement of this organ small enough to be held in our hands? I'd say the ability of the brain to change in response to cultural diversity β€” with measurable chemical and structural changes. Yea... our brains literally add nerve cell branches in response to training and learning, no matter what our age. Conversely, the brain is learning to reshape the environment in which we live and will both benefit from and suffer the consequences as it does. . πŸ“· Arnold Scheibel, MD . #science #anatomy #humanbrain #cells #wow #incredible ...

(via @facts) Give a double-tap if you'd try this! πŸŒπŸ¦πŸ˜‹ #facts #bananas #icecream #yum.

(via @facts ) Give a double-tap if you'd try this! πŸŒπŸ¦πŸ˜‹ #facts #bananas #icecream #yum ...

(via @NASA) Washington, D.C. makes the perfect backdrop for a rocket launch! πŸš€
The @NorthropGrumman #Antares rocket, with #Cygnus resupply spacecraft onboard, is seen above the Thomas Jefferson Memorial in this long exposure. It launched from Pad-0A early this morning at @NASAWallops Flight Facility in Virginia. Northrop Grumman’s 10th contracted cargo resupply mission to the International Space Station (@ISS) will deliver about 7,400 pounds of science, supplies, and food for the crew on board.

Photo Credit: NASA/Aubrey Gemignani

#nasa #cygnus #antares #NG10 #launch #rocketlaunch #science #space #rocket #rocketscience #pictureoftheday #wallops #dc #nasawallops #liftoff #321liftoff #jeffersonmemorial #washingtondc #igdc #northropgrumman.

(via @NASA ) Washington, D.C. makes the perfect backdrop for a rocket launch! πŸš€ The @NorthropGrumman #Antares rocket, with #Cygnus resupply spacecraft onboard, is seen above the Thomas Jefferson Memorial in this long exposure. It launched from Pad-0A early this morning at @NASAWallops Flight Facility in Virginia. Northrop Grumman’s 10th contracted cargo resupply mission to the International Space Station (@ISS ) will deliver about 7,400 pounds of science, supplies, and food for the crew on board. Photo Credit: NASA/Aubrey Gemignani #nasa #cygnus #antares #NG10 #launch #rocketlaunch #science #space #rocket #rocketscience #pictureoftheday #wallops #dc #nasawallops #liftoff #321liftoff #jeffersonmemorial #washingtondc #igdc #northropgrumman ...

Thank you to our friend at @mdhealthtips for this magnetic resonance angiogram of the brain.
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Angiography uses contrast dye injected into the bloodstream to highlight vessels throughout the body. The angiogram here gives us a high-resolution glimpse of the vasculature that supplies each region of the brain. A birdseye view into the very vessels we strive to preserve through diet, exercise, and avoidance of harmful toxins like smoking.
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Three main arteries supply the brain's cerebral hemispheres. The anterior cerebral artery, one of the two terminal branches of the internal carotid artery, runs anteriorly in the longitudinal cerebral fissure between the two brain hemispheres, and supplies blood to the rostral portion of the frontal lobe and mediodorsal aspect of the prefrontal cortex as well as the primary motor/somatosensory cortices. The middle cerebral artery, the other of the two terminal branches of the internal carotid, runs laterally along the base of the hemispheres and provides nourishment to the lateral surfaces of the frontal, parietal, temporal, and occipital lobes. Finally, the posterior cerebral artery, which arises as the terminal branch of the basilar artery, supports the inferior half of the temporal lobe and the rest of the occipital lobe extending to the somatosensory cortex medially.
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This anatomy lesson aside (thx, @mdhealthtips!), it's no mystery that our very existence is dependent on the brain maintaining consistent blood flow. What a glimpse into the extended super-highway and Byzantine Conduit that our blood must go through in order to bring vital nutrients to the brain.
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#science #anatomy #angiography #brains #humans.

Thank you to our friend at @mdhealthtips for this magnetic resonance angiogram of the brain. . Angiography uses contrast dye injected into the bloodstream to highlight vessels throughout the body. The angiogram here gives us a high-resolution glimpse of the vasculature that supplies each region of the brain. A birdseye view into the very vessels we strive to preserve through diet, exercise, and avoidance of harmful toxins like smoking. . Three main arteries supply the brain's cerebral hemispheres. The anterior cerebral artery, one of the two terminal branches of the internal carotid artery, runs anteriorly in the longitudinal cerebral fissure between the two brain hemispheres, and supplies blood to the rostral portion of the frontal lobe and mediodorsal aspect of the prefrontal cortex as well as the primary motor/somatosensory cortices. The middle cerebral artery, the other of the two terminal branches of the internal carotid, runs laterally along the base of the hemispheres and provides nourishment to the lateral surfaces of the frontal, parietal, temporal, and occipital lobes. Finally, the posterior cerebral artery, which arises as the terminal branch of the basilar artery, supports the inferior half of the temporal lobe and the rest of the occipital lobe extending to the somatosensory cortex medially. . This anatomy lesson aside (thx, @mdhealthtips !), it's no mystery that our very existence is dependent on the brain maintaining consistent blood flow. What a glimpse into the extended super-highway and Byzantine Conduit that our blood must go through in order to bring vital nutrients to the brain. . #science #anatomy #angiography #brains #humans ...

WE HERE AT @SCIENCE WOULD LOVE TO HEAR WHAT YOU THINK ABOUT THIS ONE....
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(via @tech) Tired of relying on electricity and the regular old moon to provide lights around town at night, Chengdu, in southwestern China, hopes to launch an

WE HERE AT @SCIENCE WOULD LOVE TO HEAR WHAT YOU THINK ABOUT THIS ONE.... . (via @tech ) Tired of relying on electricity and the regular old moon to provide lights around town at night, Chengdu, in southwestern China, hopes to launch an "illumination satellite" in 2020. . The idea was presented recently by Wu Chunfeng, chairman of the Chengdu Aerospace Science and Technology Microelectronics System Research Institute Co. Details on the "illumination satellite" are scant, but Wu said it would be eight times brighter than the actual moon, could light an area 10 to 80 kilometers (6.2 to 50 miles) wide, and that its exact lighting range could be controlled within a few dozen meters. . The satellite would also have a "highly reflective coating to reflect light from the sun with solar panel-like wings whose angles can be adjusted." . #science #tech #china #chengdu #moon ...

(via @tech) In celebration of the 10th anniversary of @NASA's Fermi Gamma-ray Space Telescope, NASA has named 21 new gamma-ray constellations.πŸ”­ In addition to the Hulk, they have also named a constellation after Godzilla. ✨
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These constellations aren't based on stars, they're based on gamma rays, as observed by the Fermi telescope.

(via @tech ) In celebration of the 10th anniversary of @NASA 's Fermi Gamma-ray Space Telescope, NASA has named 21 new gamma-ray constellations.πŸ”­ In addition to the Hulk, they have also named a constellation after Godzilla. ✨ . These constellations aren't based on stars, they're based on gamma rays, as observed by the Fermi telescope. "Gamma rays are the strongest form of light," explained NASA. "They pack enough punch to convert into matter under the right circumstances, a transformation both Banner and the Hulk would certainly appreciate." . #science #tech #telescope #nasa #hulk #godzilla #constellation ...

πŸ‡¨πŸ‡¦πŸ”­ Via our Canadian Science friends at @canadianspaceagency...
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πŸ‡¨πŸ‡¦πŸ”­ Via our Canadian Science friends at @canadianspaceagency... . "Jupiter is the largest planet in our solar system. You can observe its storms and gas bands with a small telescope and its four largest moons with binoculars." . Credit: NASA/JPL-Caltech/SwRI/MSSS/Gerald EichstΓ€dt/SeΓ‘n Doran #spacefact #quickfact #planets #solarsystem #photo #jupiter #storms #clouds ...