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Sagittarius is a mutable sign, meaning it is associated with adaptability and flexibility. This perfectly reflects the archers' deep-rooted desire for change. Sagittarians are born to explore and it is critical that these archers have the freedom to roam. (Sagittarius rules the thighs, so these archers are always on the move.) Fueled by wanderlust, these archers can be found traversing all corners of the world on thrill-seeking expeditions, chasing after geographical, intellectual, and spiritual adventures. Sagittarians are on a perpetual quest for knowledge, which makes them incredible storytellers, entertainers, and creatives. It's not all fun and games, however: Sagittarius is notorious for its signature bluntness, and their "brutal honesty" can often lead to misunderstandings, communication breakdowns, and lots of hurt feelings. But the good news? Sagittarius doesn't take anything too seriously, so it's hard to stay mad at these wild optimists. Sagittarius' ruling planet is Jupiter, the planet of abundance. You know the expression "go big or go home?" Yeah, that’s basically Jupiter's motto. Jupiter is all about excess — it expands anything it touches. So, naturally, this sign demands to have it all. The word "enough" doesn't exist within this sign's vocabulary. When Sagittarius is intrigued by something — whether it's a Wikipedia blackhole or a newfound internet crush — they go all in. That is, until something else catches their eye. As a mutable sign, Sagittarius don'...

Astronomers have also calculated that the diameter of the Milky Way’s Also dwarfing Sagittarius A* is a disk of gas surrounding it that extends for between 5 and 30 light-years occasionally feeding matter to Sagittarius A* causing faint flashes of X-rays. This accretion disc is also connected with X-ray emissions caused by friction driving temperatures in the disc up as high as 18 million degrees Fahrenheit (10 million degrees Celsius). Sagittarius A*: Observations Everything in our 13.6 billion-year-old Black holes are notoriously difficult to spot, usually only inferred by the effects they have on their environment. This is because not only do they not emit light, but black holes also trap photons behind a boundary called the event horizon, making studying them directly in optical light near impossible. Observing Sagittarius A* from Fortunately, astronomers have developed other ways of gaining insights into Sagittarius A*. For instance, the mass of a central body and its radius can be determined by observing the gravitational influence that it has on the objects that orbit it. To observe Sagittarius A*, astronomers monitored the star S2, which orbits Sagittarius A* at a distance of 11 billion miles (18 billion km) and a speed of 17.1 million mph (11.4 kph). The star also has a highly elliptical 16-year orbit. Sagittarius A* first image On May 12, 2022, scientists unveiled our An image of the supermassive black hole at the center of the Milky Way, a behemoth dubbed Sagitt...

In April of 2017, The Harvard Gazette: “The image of this object known as Sagittarius A-star, often referred to as Sgr A* (pronounced sadge-ay-star), shows the telltale sign of a black hole, as did the earlier one in “The new picture, described today in a special issue of Related reading in The Atlantic: Behold, the Bottomless Pit Holding Everything Together, which explains that while Sgr A* moves faster than M87, changing quickly over the course of a day, it’s “considered to be relatively quiet.” “Quiet does not mean boring. Although Einstein’s theories led to the discovery of black holes, scientists still don’t know whether the rules of gravity as we understand them apply in such extreme, unknowable conditions… Astronomers still don’t know what transpires in the interior of a black hole, beyond that point of no return.” Watch these • • • • • Bonus: This Webby award-winning video collection exists to help teachers, librarians, and families spark kid wonder and curiosity. TKSST features smarter, more meaningful content than what's usually served up by YouTube's algorithms, and amplifies the creators who make that content. Curated, kid-friendly, independently-published. Support this mission by TKSST is an unprecedented collection of 5,000+ kid-friendly videos, curated for teachers and parents who want to share smarter, more meaningful media in the classroom and at home. And it's free for everyone. Curated by Rion Nakaya, first launched with her teens when they toddled. Clic...

At the very heart of the Milky Way is a region known as Sagittarius A*. This region is known the be the home of a supermassive black hole with millions of times the mass of our own Sun. And with the discovery of this object, astronomers have turned up evidence that there are supermassive black holes at the centers most most spiral and elliptical galaxies. The best observations of Sagittarius A*, using Of course, astronomers haven’t actually seen the supermassive black hole itself. Instead, they have observed the motion of stars in the vicinity of Sagittarius A*. After 10 years of observations, astronomers detected the motion of a star that came within 17 light-hours distance from the supermassive black hole; that’s only 3 times the distance from the Sun to Pluto. Only a compact object with the mass of millions of stars would be able to make a high mass object like a star move in that trajectory. Remove All Ads on Universe Today Join our Patreon for as little as $3! Get the ad-free experience for life The discovery of a supermassive black hole at the heart of the Milky Way helped astronomers puzzle out a different mystery: quasars. These are objects that shine with the brightness of millions of stars. We now know that quasars come from the radiation generated by the disks of material surrounding actively feeding supermassive black holes. Our own black hole is quiet today, but it could have been active in the past, and might be active again in the future. Some astronomers ha...

Every sign is a powerful, vital piece in the puzzle that is the zodiac. The four From an astronomical perspective, we know that the Sun doesn't move, as its stability anchors the entire solar system. But from our vantage here on planet Earth, the Sun is in constant motion. We can depend on its daily performance (including inspiring sunrises and dramatic sunsets), as well as its location in the sky. The position the Sun occupied at your exact moment of birth is known as your "sun sign" (sometimes referred to as "star sign" or "birth sign"), and it's the cosmic launching pad for both Got it? Good. Now let's take this to the next level. The twelve zodiac signs are also divided into sub-groups: four triplicities and three quadruplicities. If this seems a bit confusing, don't worry, there's a method to the madness. Triplicities refer to the three zodiac signs in each group: Fire Signs (Aries, Leo, Sagittarius), Earth Signs (Taurus, Virgo, Capricorn), Air Signs (Gemini, Libra, Aquarius), and Water Signs (Cancer, Scorpio, Pisces). Generally speaking, fire signs are Quadruplicities, also known as "modalities," refer to the signs' qualities and where each zodiac sign occurs within its respective season. There are three modalities, with four zodiac signs in each: Cardinal (Aries, Cancer, Libra, and Capricorn) occur at the beginning of a new season, and are excellent at taking action and starting initiatives; Fixed (Taurus, Leo, Scorpio, and Aquarius) occur in the middle of seasons, ...

On May 12, 2022, astronomers on the Event Horizon Telescope team 1. What is Sagittarius A*? Sagittarius A* sits at the the center of our Milky Way galaxy, in the direction of the Sagittarius constellation. For decades, astronomers have been In the 1980s, two teams of astronomers started tracking the motions of stars near this mysterious source of radio waves. They saw stars whirling around a dark object at speeds up to a third of the speed of light. Their motions suggested that at the center of the Milky Way was a black hole The size of a black hole is defined by its The Milky Way’s black hole is huge compared to the 2. What does the new image show? Black holes themselves are completely dark, since nothing, not even light, can escape their gravity. But black holes are surrounded by clouds of gas, and astronomers can measure this gas to infer images of the black holes within. The central dark region in the image is a shadow cast by the black hole onto the gas. The bright ring is the gas itself glowing. The bright spots in the ring show areas of hotter gas that may one day fall into the black hole. Some of the gas visible in the image is actually behind Sagittarius A*. Light from that gas is being bent by the powerful gravity of the black hole toward Earth. This effect, called 3. What went into producing this image? Supermassive black holes are extremely hard to measure. They are far away and shrouded by the gas and dust that clogs the center of galaxies. They are also relat...