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Tuesday, May 21, 2024
Does the Milky Way orbit anything?

Does the Milky Way orbit anything?

It seems like everything orbits something in space. Moons orbit planets. Planets orbit stars. Stars orbit the centers of galaxies. But beyond that, things get a little harder to visualize. Do galaxies — and, specifically, the Milky Way — orbit anything?To answer that, we first need to know how orbits work. Consider two objects orbiting…
The Venerable Hubble Space Telescope Keeps Delivering

The Venerable Hubble Space Telescope Keeps Delivering

The world was much different in 1990 when NASA astronauts removed the Hubble Space Telescope from Space Shuttle Discovery’s cargo bay and placed it into orbit. The Cold War was ending, there were only 5.3 billion humans, and the World Wide Web had just come online. Now, the old Soviet Union is gone, replaced by…
Not All Black Holes are Ravenous Gluttons

Not All Black Holes are Ravenous Gluttons

Some Supermassive Black Holes (SMBHs) consume vast quantities of gas and dust, triggering brilliant light shows that can outshine an entire galaxy. But others are much more sedate, emitting faint but steady light from their home in the heart of their galaxy. Observations from the now-retired Spitzer Space Telescope help show why that is. It…
Scientists discover bizarre region around black holes that proves Einstein right yet again

Scientists discover bizarre region around black holes that proves Einstein right...

Astronomers have observed matter plunging into the mouth of a black hole at the speed of light, proving a key prediction made by Einstein right, yet again.In 1915, Einstein's general theory of relativity predicted that once matter gets sufficiently close to a black hole, the immense force of the space-time tear's gravity should force it…
Some of the oldest stars in the universe found hiding near the Milky Way’s edge — and they may not be alone

Some of the oldest stars in the universe found hiding near...

Three alien stars circling the Milky Way could be some of the oldest ever found in the universe, a new study reveals. The ancient celestial objects may have been among the first to form after the Big Bang and were likely stolen by our galaxy during gravitational tugs-of-war billions of years ago.In the study, published…
Alien ‘Dyson sphere’ megastructures could surround at least 7 stars in our galaxy, new studies suggest

Alien ‘Dyson sphere’ megastructures could surround at least 7 stars in...

At least seven stars in the Milky Way show signs of potentially harboring a hypothetical, super-advanced form of alien technology known as a Dyson sphere, scientists claim. While the researchers can not be totally sure that these stars host intelligent civilizations, they will undoubtedly pique the interest of scientists searching for extraterrestrial life in the…
James Webb telescope spots 2 monster black holes merging at the dawn of time,  challenging  our understanding of the universe

James Webb telescope spots 2 monster black holes merging at the...

Astronomers have used the James Webb Space Telescope (JWST) to detect the most distant pair of colliding black holes in the known universe. The cosmic monsters — each estimated to be as massive as 50 million suns — have been detected more than 13 billion light-years away, at a time just 740 million years after…
New Photos Show Jupiter’s Tiny Moon Amalthea

New Photos Show Jupiter’s Tiny Moon Amalthea

NASA’s Juno spacecraft spies a tiny inner moon of Jupiter, Amalthea. It’s tiny, but it’s there. By now, we’re all used to seeing amazing photos of Jupiter courtesy of NASA’s Juno mission on a routine basis. Many of these are processed by volunteer ‘citizen scientists,’ and they show the swirling cloud-tops of Jove courtesy of…
Jupiter’s elusive 5th moon caught crossing the Great Red Spot in new NASA images

Jupiter’s elusive 5th moon caught crossing the Great Red Spot in...

NASA's Juno spacecraft has spotted the elusive fifth moon of Jupiter transiting the giant planet's Great Red Spot, giving astronomers a rare view of this small but intriguing natural satellite.Jupiter's most famous moons are its four Galilean satellites: Io, Europa, Ganymede and Callisto, each of which is several thousand kilometers wide. Jupiter's fifth moon to…
A Star Became 1,000 Times Brighter, and Now Astronomers Know Why

A Star Became 1,000 Times Brighter, and Now Astronomers Know Why

Astronomers were surprised in 1937 when a star in a binary pair suddenly brightened by 1,000 times. The pair is called FU Orionis (FU Ori), and it’s in the constellation Orion. The sudden and extreme variability of one of the stars has resisted a complete explanation, and since then, FU Orionis has become the name…

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