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“We need to have tabletop exercises that go through a variety of scenarios, including possibly nuclear weapons,” a senior official told CNN earlier this month. Leaks loomRecent online leaks of Pentagon documents involving South Korea also loom over the visit. One of the leaked documents describes, in remarkable detail, a conversation between two senior South Korean national security officials about concerns by the country’s National Security Council over a US request for ammunition. Plans and pompWednesday’s events mark just the second state visit of the Biden presidency (Biden hosted French President Emmanuel Macron and his wife Brigitte in December 2022). President Joe Biden, first lady Jill Biden, South Korea's President Yoon Suk Yeol and his wife Kim Keon Hee visit the Korean War Veterans Memorial in Washington, Tuesday.

☆ Webb telescope takes striking image of planet Uranus
▼ + stars: | 2023-04-07 | by ( Taylor Nicioli | ) edition.cnn.com time to read: +4 min

CNN —The James Webb Space Telescope has captured a new stunning image of ice giant Uranus, with almost all its faint dusty rings on display. Uranus has 13 known rings, with 11 of them visible in the new Webb image. A November Hubble image of Uranus (left) captured the planet's bright polar cap, while the recent Webb image displayed more detail, with a subtle enhanced brightness at the cap's center. With the exact mechanism behind the haze unknown, scientists are studying the polar cap using telescope images such as this new Webb image. In this new Webb image, similar to other recent images by the Hubble Space Telescope, storm clouds can be seen at the edge of the polar cap.

☆ The solar system was hit with a gamma-ray burst so bright, it blinded scientists' equipment in space
▼ + stars: | 2023-03-29 | by ( Chris Panella | Jessica Orwig | ) www.businessinsider.com time to read: +5 min

Our solar system was hit by a gamma-ray burst so bright, it blinded space equipment and telescopes. A gamma-ray burst that recently hit our solar system was so bright, it temporarily blinded gamma-ray instruments in space, according to a NASA release. Scientists say the gamma-ray burst (GRB), the most powerful type of explosion in the universe, was 70 times brighter than any previously recorded event. What is a gamma-ray burst? Because it blinded space instruments, they couldn't accurately record it, so scientists weren't sure how bright the burst was when it first reached our planet.

☆ Giant 'holes' dozens of times the size of our planet are appearing on the sun. Here's how they could affect Earth.
▼ + stars: | 2023-03-29 | by ( Marianne Guenot | ) www.businessinsider.com time to read: +11 min

Two huge coronal holes, dozen of times the size of the Earth, have appeared on the sun. These coronal holes can spew solar winds at 1.8 million mph toward our planet, which can cause stunning auroras and disrupt satellites. Coronal holes aren't actually holes in the sunA coronal hole rotates across the face of the sun, streaming solar wind towards Earth, February 1, 2017. Coronal holes happen in the "corona," the atmosphere of the sun, and can only be seen in UV or X-ray light. We could see this month's coronal holes again next monthThe coronal hole came into view as the sun rotated.

That caused the Northern Lights, or aurora borealis, to make a rare appearance in skies across the US. The colorful lights were seen as far south as Arizona, much further than what was forecast. They normally occur in the Arctic, but powerful eruptions on the sun caused them to stretch as far south as Phoenix, Arizona before sunrise on Friday, according to images shared by photographers and skywatchers on social media. "Most people when they're seeing that far south... they're seeing it on the horizon," Young said. NWS La CrosseAnchorage, AlaskaAuroras in Anchorage, Alaska, on March 24, 2023.

NASA's Solar Dynamics Observatory captured a video of a tornado churning on the sun. The fiery formation of boiling solar plasma grew to an estimated height of 14 Earths. SDO/NASAThe magnetic structure that caused this tornado is actually a lot bigger than what we're seeing. As these move around the sun, they create magnetic fields that erupt through the solar surface. The sun is getting more activeA video from NASA's Solar Dynamics Observatory shows the massive hole in the sun's atmosphere.

☆ These eight charts show why climate change matters right now
▼ + stars: | 2023-03-23 | by ( Catherine Clifford | In Catclifford | ) www.cnbc.com time to read: +11 min

Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment ReportGlobal warming is caused when greenhouse gases like carbon dioxide and methane trap heat in the atmosphere. Climate change is already having impacts on human life and well-beingZoom In Icon Arrows pointing outwards This chart shows the various impacts climate change has on water availability, food production, health and well-being, cities and infrastructure and biodiversity and ecosystems. Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment ReportMany of the worst impacts of climate change will come to pass in the lives of the youngest humans. Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment ReportThe globe has warmed by 1.1 degrees Celsius above pre-industrial levels, the IPCC report says. Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment ReportA slight change in the average change of the earth's temperature will impact different populations differently.

☆ The Northern Lights could dazzle the skies from Washington to New York on Friday, blown by winds from a giant 'hole' on the sun
▼ + stars: | 2023-03-22 | by ( Chris Panella | Morgan Mcfall-Johnsen | Jessica Orwig | ) www.businessinsider.com time to read: +3 min

The Northern Lights could appear in the skies over some northern US states on Friday. The lights could be dazzling thanks to solar winds blowing from a giant coronal hole on the sun. NOAA/Space Weather Prediction CenterThese solar winds are coming from a giant coronal hole on the sun. As that giant hole spread across the corona, it blasted strong, high-speed solar winds into space, in the direction of Earth. They have previously driven the aurora lights as far south as New York and Idaho.

The sun is sporting a giant coronal hole that could fit 20-30 Earths across, back-to-back. Coronal holes blast rapid solar winds into space that travel 500-800 kilometers per second. Coronal holes are cooler in temperature, so they don't glow as bright and therefore look black against the rest of the sun. In this case, the solar winds from this coronal hole are scheduled to reach Earth by the end of this week. But coronal holes — even large ones like this — are far less violent.

☆ How Can We Measure Droughts and Deluges? Weigh the Planet.
▼ + stars: | 2023-03-14 | by ( Mira Rojanasakul | ) www.nytimes.com time to read: +15 min

Scientists have long cautioned that warming temperatures would lead to wetter and drier global extremes — increasingly severe rainfall, more intense droughts. km3/month Global intensity of wet and dry extremes 30,000 20,000 Wet extremes 10,000 -10,000 Dry extremes -20,000 2004 2006 2008 2010 2012 2014 2016 2018 2020 km3/month 30,000 Global intensity of wet and dry extremes 20,000 Wet extremes 10,000 -10,000 Dry extremes -20,000 2004 2006 2008 2010 2012 2014 2016 2018 2020 km3/month Global intensity of wet and dry extremes 30,000 20,000 Wet extremes 10,000 -10,000 Dry extremes -20,000 2004 2008 2012 2016 2020 km3/ month Global intensity of wet and dry extremes 30,000 20,000 Wet extremes 10,000 -10,000 Dry extremes -20,000 2004 2008 2012 2016 2020 km3/ month Global intensity of wet and dry extremes 30,000 20,000 Wet extremes 10,000 -10,000 Dry extremes -20,000 2004 2008 2012 2016 2020 Source: Rodell and Li, Nature Water (2023), based on analysis of NASA Grace and Grace-FO data. Europe July 2018–April 2021 Drought across Europe returned with the La Niña that lasted through 2022. Central Africa 2. Central Africa 2.

☆ NASA image may show first-ever 'rogue' supermassive black hole, leaving a trail of newborn stars in its wake
▼ + stars: | 2023-03-09 | by ( Morgan Mcfall-Johnsen | ) www.businessinsider.com time to read: +8 min

A NASA Hubble image may show the first runaway supermassive black hole ever discovered. Astrophysicists have long theorized that black holes could "go rogue" or "run away," if other black holes pushed them out of their galaxies. But nobody has ever confirmed a black hole wandering through intergalactic space, much less a supermassive black hole going rogue. And while two galaxies colliding is the simplest explanation for a rogue black hole, that's not what seems to have happened here. Even though they're invisible, there's no reason to worry about rogue supermassive black holes sneaking up on us from other galaxies.

The planet had one of its hottest years on record in 2022, as ocean heat soared and sea ice coverage in Antarctica melted to near-record lows, two federal science agencies announced Thursday. Last year was the fifth-warmest in recorded history, with global average surface temperatures that were 1.6 degrees Fahrenheit (about 0.8 degrees Celsius) warmer than the 20th century average, according to the latest yearly analysis by NASA. A separate report by the National Oceanic and Atmospheric Administration (NOAA) found that Earth had its sixth-warmest year on record. That’s not a robust change,” Gavin Schmidt, director of the NASA Goddard Institute for Space Studies, said Thursday in a news briefing. The key thing is the long-term trends, and they’re very consistent from one record [to the next].”

☆ 2022 was one of the top 10 hottest years on record and the warmest La Nina year on record, according to government scientists
▼ + stars: | 2023-01-12 | by ( Catherine Clifford | In Catclifford | ) www.cnbc.com time to read: +3 min

New data from the U.S. government shows that 2022 was one of the top 10 hottest years on record, with data going back to 1880. And of particular note, 2022 was the warmest year on record when there was a La Nina trade winds pattern, which is a weather event that has a cooling effect on global temperatures. According to both NOAA and NASA scientists, global temperatures were about 1.6 degrees Fahrenheit above their respective baseline averages from the 20th century. 2022 had a La Nina weather pattern, which generally lowers global temperatures compared to what they would have been in a normal weather pattern year. El Nino and La Nina refer to opposite weather patterns determined by trade winds that blow in the Pacific ocean.

☆ Webb telescope spies clouds beneath haze of Saturn moon Titan
▼ + stars: | 2022-12-01 | by ( Ashley Strickland | ) edition.cnn.com time to read: +4 min

CNN —The James Webb Space Telescope has spied clouds on one of the solar system’s most intriguing moons. Titan’s atmosphere is made of nitrogen and methane, which gives it a fuzzy, orange appearance. Astronomers compared Webb (left) and Keck images of Titan to see how clouds evolved. The data, which is still being analyzed, was able to see deeper into Titan’s atmosphere and surface than the Cassini spacecraft, which orbited Saturn and its moons for 13 years. The cloud observations were a long time coming.

☆ James Webb Space Telescope: No evidence linking namesake to firings of LGBTQ staff
▼ + stars: | 2022-11-18 | by ( Scottie Andrew | ) edition.cnn.com time to read: +5 min

CNN —Despite numerous calls from astronomers to rename its powerful new telescope, NASA officials stood by the naming of the James Webb Space Telescope before its launch. With the telescope nearly a year into its stint in space, the agency has released its chief historian’s investigation into the namesake of the telescope. Earlier this summer, Dr. Jane Rigby, the operations project scientist for the James Webb Space Telescope, tweeted that “a transformative telescope should have a name that stands for discovery and inclusion.”Officials at NASA have refused to rename it, though, citing an investigation into Webb’s career. The James Webb Space Telescope is the most powerful telescope ever built. NASA Goddard Space Flight CenterNo evidence links Webb to any action that followed those discussions, Odom said.

☆ Astronauts' stunning photos from the International Space Station show Earth's triumphs and tragedies in 2022
▼ + stars: | 2022-11-05 | by ( Morgan Mcfall-Johnsen | ) www.businessinsider.com time to read: 1 min

"At the beginning of the war, the whole country went dark at night," German astronaut Matthias Maurer said in May, adding, "People actually only recognized Kyiv." Kyiv, Ukraine, as seen by satellite in January 2022, left, and March 2022, right. NASA Earth Observatory/Joshua Stevens/Black Marble data courtesy of Ranjay Shrestha/NASA Goddard Space Flight CenterThat's what he told German broadcaster ARD's "Morgenmagazin" program, according to a translation in Newsweek. "Then you could also see the impacts in the first days of the war. In Kyiv, you could see lightning at night," as well as the "rockets that hit," he added, according to Newsweek.

☆ A lunar eclipse will bring a blood red moon on Election Day — the last one for 3 years
▼ + stars: | 2022-11-04 | by ( Morgan Mcfall-Johnsen | ) www.businessinsider.com time to read: +3 min

That paints the full moon red, raising a blood moon into the skies on Election Day morning. The next total lunar eclipse won't happen until 2025. It's a total lunar eclipse, often called a "blood moon," and there won't be another one until 2025. The blue light from the sun scatters away, and longer-wavelength red, orange, and yellow light pass through, turning our moon red. Then wait until March 14, 2025, for the next total lunar eclipse.

☆ Fact Check-The Earth is not covered by a dome or ‘firmament’
▼ + stars: | 2022-10-31 | by ( Reuters Fact Check | ) www.reuters.com time to read: +7 min

Users on social media are saying people on Earth are living under a dome, also called a “firmament,” without providing evidence to support the claim. But the video’s examples offer no proof of humans living under a dome or firmament, while there is ample evidence that no dome exists. “Rocket hitting the flat earth dome”, reads the title of one of the YouTube clips. SIXTY YEARS OF SPACEFLIGHTExperts pointed out that if there were a dome that covered the Earth, astronauts would have encountered it by now. A video provides no evidence that the Earth is under a dome or “firmament”.

The "check your kids’ Halloween candy" meme, which first went viral in meme form in October 2014, parodies "a Halloween urban legend about people hiding needles and razors in candy before giving them out to trick-or-treaters," according to meme database Know Your Meme. We just found the Carina Nebula in a candy bar. No words," the LinkedIn official Twitter account wrote in an Oct. 11 tweet, featuring an image of a beach inside a candy bar. Arcade and restaurant Dave & Busters tweeted: "Be diligent and check your child’s candy this year, just found a finger trap shoved inside a candy bar. The Oklahoma Department of Wildlife Conservation joked it had found a slimier surprise in a candy bar.

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