#extraterrestrial-intelligence

#extraterrestrial-intelligence

"I've done a lot of time-dilated travel." This statement encapsulates the essence of Grace's journey, highlighting the profound effects of traveling at speeds approaching light, where time for the traveler slows down significantly compared to those remaining on Earth.

After it reviewed Kalshi trading data, The Atlantic reports that a single trader just bet nearly $100,000 that the Trump administration will confirm the existence of alien life or technology by the end of this year. Actually, that was just the first big bet. Just 35 minutes later, another wager appeared, possibly by the same person, for nearly double that amount.

The new work was less notable for showing that we had found these bases in Ryugu than for solving a previous mystery: earlier studies had failed to detect them there, despite their presence in many other asteroid samples.

My prediction is based on only two assumptions. First, our visitors from space can die; they are not immortal. Second, they care about each other. When one of their own dies, they mourn them, just as humans do. These assumptions, I think, will have led these aliens to invent gods and a belief in the afterlife. Belief in the afterlife, where we defeat death and are reunited with loved ones who have died, is the basis of all past and current religions.

This system is truly extraordinary. We are seeing the radio equivalent of a laser halfway across the universe. This galaxy acts as a lens, the way a water droplet on a window pane would, because its mass curves the local space-time. So we have a radio laser passing through a cosmic telescope before being detected by the powerful MeerKAT radio telescope.

"The United States government appears to be partway through a multi-year process to declassify and disclose information on the existence of a technologically advanced non-human intelligence responsible for Unidentified Anomalous Phenomena (UAPs),"

If a signal gets broadened by its own star's environment, it can slip below our detection thresholds, even if it's there, potentially helping explain some of the radio silence we've seen in technosignature searches. This statement from Dr. Vishal Gajjar highlights how stellar environmental factors may cause detectable signals to become invisible to current SETI instruments.

This system is truly extraordinary. We're seeing the radio equivalent of a laser halfway across the universe. Fundamentally, masers and lasers are focused beams of light in the same frequency. In the realm of astrophysics, these can arise from clouds of dust being excited into a higher energy state from the light emitted by other sources, like stars and black holes.

We found that life is more likely to survive an asteroid impact, so it's definitely still a real possibility that life on Earth could have come from Mars. Maybe we're Martians! The idea that life could have spread through the solar system or even the universe on rocks is known as the lithopanspermia hypothesis.

For example, reader David Erickson had this on his mind: If there were aliens 66 million light-years from Earth, how big a telescope would they need to see dinosaurs? Ha! I love this question. I've thought of it myself but never worked out the mathexcept to think, Probably pretty big, which turns out to dramatically underestimate the actual answer.

Now say you want to run some modest AI stuff. That's a bigger job, so let's scale up our cubical computer with edges twice as long as before. That would make the volume eight times larger (2 3), so we could have eight times as many processors, and we need eight times as much power input-2,400 watts. However, the surface area is only four times (2 2) larger, so the radiative power would be about 4,000 watts.

This spectacular book of photographs of the Universe is dedicated to the late astronomer and broadcaster Patrick Moore, who introduced the authors to one another. Astrophysicist Derek Ward-Thompson, rock guitarist Brian May - who also holds a PhD in astrophysics - and astrophotographer J.-P. Metsävainio showcase some of the "billions of vast glowing islands in the immensity of what seems like infinite space and time". Several of the photos appear in adjacent pairs, visible in 3D with a stereo-focusing viewer.

In October, at a tech conference in Italy, Amazon and Blue Origin founder Jeff Bezos predicted that millions of people will be living in space " in the next couple of decades " and "mostly," he'd said, "because they want to," because robots will be more cost-effective than humans for doing the actual work in space.

It's a plant! It's a fungus! It's... an entirely new type of lifeform hitherto unknown to science? That appears to be the case for a puzzling, spire-shaped organism that lived over 400 million years ago, according to a new study published in the journal Science Advances. After analyzing its internal structures, the authors argue that the mystifying ancient beings known as prototaxites don't belong to any of the existing biological kingdoms.

Looking skyward fills us with wonder. Off-world, the Sun, planets, stars, and galaxies all await. Our Solar System encompasses our own cosmic backyard. Farther away, stars and star clusters abound within the Milky Way. Hundreds of billions of stars exist just within our home galaxy. Inside our Local Group, only Andromeda surpasses us in mass, size, and stars. More than 5 million light-years away, galaxies abound in groups and clusters.