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WATCH: NASA’s mesmerizing new black hole visualization
For Black Hole Week, NASA released a mesmerizing animation of what a black hole probably looks like.
- In April 2019, scientists released the first image of a black hole, but its low resolution makes it hard to understand what a black hole might look like.
- The new visualization was made using special software at NASA's Goddard Space Flight Center.
- Created by Jeremy Schnittman, the visualization hopefully makes Einstein's theory of special relativity a bit easier to understand.
In April 2019, the Event Horizon Telescope team released the first image of a black hole — an extremely dense object from which not even light can escape. Capturing the image took hundreds of scientists, years of work and eight telescopes, but the low resolution makes it hard to get a sense of how black holes actually look. Now, a new NASA animation offers a clue.
The visualization, created by Jeremy Schnittman at NASA's Goddard Space Flight Center, shows how a black hole's gravity distorts the light around it, like a carnival mirror. The gravitational pull is so extremely strong that we're able to see, from our angle, light that's traveling under and behind the black hole. NASA writes:
"Seen nearly edgewise, the turbulent disk of gas churning around a black hole takes on a crazy double-humped appearance. The black hole's extreme gravity alters the paths of light coming from different parts of the disk, producing the warped image. The black hole's extreme gravitational field redirects and distorts light coming from different parts of the disk, but exactly what we see depends on our viewing angle. The greatest distortion occurs when viewing the system nearly edgewise."
You might notice that the left side of the black hole's accretion disk — a ring of hot matter that orbits a black hole near the speed of light — appears brighter than the right side, a phenomenon that's explained by the Doppler effect.
"Glowing gas on the left side of the disk moves toward us so fast that the effects of Einstein's relativity give it a boost in brightness; the opposite happens on the right side, where gas moving away us becomes slightly dimmer," NASA wrote. "This asymmetry disappears when we see the disk exactly face on because, from that perspective, none of the material is moving along our line of sight."
The visualization hopefully makes it easier to understand Einstein's theory of special relativity.
"Simulations and movies like these really help us visualize what Einstein meant when he said that gravity warps the fabric of space and time," said Schnittman. "Until very recently, these visualizations were limited to our imagination and computer programs. I never thought that it would be possible to see a real black hole."
It's currently Black Hole Week at NASA, so if you've ever wanted to learn more about one of the cosmos' strangest creations, you can head over to the agency's website.
NASA's Guide To Black Hole Safety
Construction of the $500 billion dollar tech city-state of the future is moving ahead.
- The futuristic megacity Neom is being built in Saudi Arabia.
- The city will be fully automated, leading in health, education and quality of life.
- It will feature an artificial moon, cloud seeding, robotic gladiators and flying taxis.
The Red Sea area where Neom will be built:
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Are we genetically inclined for superstition or just fearful of the truth?
- From secret societies to faked moon landings, one thing that humanity seems to have an endless supply of is conspiracy theories. In this compilation, physicist Michio Kaku, science communicator Bill Nye, psychologist Sarah Rose Cavanagh, skeptic Michael Shermer, and actor and playwright John Cameron Mitchell consider the nature of truth and why some groups believe the things they do.
- "I think there's a gene for superstition, a gene for hearsay, a gene for magic, a gene for magical thinking," argues Kaku. The theoretical physicist says that science goes against "natural thinking," and that the superstition gene persists because, one out of ten times, it actually worked and saved us.
- Other theories shared include the idea of cognitive dissonance, the dangerous power of fear to inhibit critical thinking, and Hollywood's romanticization of conspiracies. Because conspiracy theories are so diverse and multifaceted, combating them has not been an easy task for science.
A growing body of research suggests COVID-19 can cause serious neurological problems.
- The new study seeks to track the health of 50,000 people who have tested positive for COVID-19.
- The study aims to explore whether the disease causes cognitive impairment and other conditions.
- Recent research suggests that COVID-19 can, directly or indirectly, cause brain dysfunction, strokes, nerve damage and other neurological problems.
Brain images of a patient with acute demyelinating encephalomyelitis.
COVID-19 and the brain<p>A growing body of research reveals alarming neurological complications among COVID-19 patients. On Wednesday, for example, researchers from University College London published a <a href="https://academic.oup.com/brain/article/doi/10.1093/brain/awaa240/5868408" target="_blank">study</a> in the journal Brain that describes how some patients have suffered temporary brain dysfunction, strokes, nerve damage, and other neurological problems concurrent with COVID-19.</p><p>Some patients suffered brain inflammation as a result of a rare disease called acute disseminated encephalomyelitis, which can cause numbness, seizures, and confusion. One patient in the study even hallucinated monkeys and lions in her home.</p>
Photo by Mario Tama/Getty Images<p>A separate study published in the <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7198407/" target="_blank">Journal of Clinical Neuroscience</a> notes that some COVID-19 patients have also suffered neurological complications like impaired consciousness and acute cerebrovascular disease. The study notes that past viruses like MERS and SARS also seemed to cause neurological problems.</p><p>A troubling finding among this growing body of research is that some patients seem to suffer neurological damage even when respiratory symptoms aren't obvious. Additionally, scientists aren't sure whether damage from the disease will be permanent.</p><p style="margin-left: 20px;">"Given that the disease has only been around for a matter of months, we might not yet know what long-term damage COVID-19 can cause," Dr. Ross Paterson, joint first author of the University College London study, said in a <a href="https://www.eurekalert.org/pub_releases/2020-07/ucl-iid070620.php" target="_blank">press release</a>. "Doctors needs to be aware of possible neurological effects, as early diagnosis can improve patient outcomes."</p><p>If you've been diagnosed with COVID-19 and want to enroll in the study, visit <a href="https://www.cambridgebrainsciences.com/studies/covid-brain-study" target="_blank">cambridgebrainsciences.com/studies/covid-brain-study</a>.</p>
Coronavirus layoffs are a glimpse into our automated future. We need to build better education opportunities now so Americans can find work in the economy of tomorrow.