With unusually powerful magnetic fields, these stars seem to get a boost when their cores start to drift apart. Thus, they may not be the ideal hosts for habitable exoplanets.
Category: alien life – Page 37
The search for alien life has always been hampered by the huge racket that Earth generates, rendering it difficult to tease out alien signals from all the local noise.
But a new method for recognizing radio signals traveling through interstellar space could narrow the search considerably.
“I think it’s one of the biggest advances in radio SETI in a long time,” says astrophysicist Andrew Siemion, a co-author of a paper describing the technique and director of the Berkeley Search for Extraterrestrial Intelligence (SETI) Research Center.
Dismantling the belief in a static universe, Edwin Hubble’s revolutionary observations in the 1920s laid the groundwork for our understanding of a continually expanding cosmos. However, we must seek to reconcile this theory with observations that are consistent with a non-expanding universe, writes Tim Anderson.
You have been taught that the universe began with a Big Bang, a hot, dense period about 13.8 billion years ago. And the reason we believe this to be true is because the universe is expanding and, therefore, was smaller in the past. The Cosmic Microwave Background is the smoking gun for the Big Bang, the result of a reionization of matter that made the universe transparent about 300–400,000 years after the Big Bang.
How did we go from Einstein modifying his equations to keep the universe static and eternal, which he called the biggest blunder of his life, to every scientist believing that the universe had a beginning in 10 years? It all started with astronomer Edwin Hubble using the most powerful telescope at the time on Mount Wilson in California. At the time, in the 1920s, scientists believed that the Milky Way galaxy was the totality of the universe. Objects in the night sky like Andromeda that we now know are galaxies were called “nebulae”.
The James Webb Space Telescope has detected the earliest-known carbon dust in a galaxy ever.
Using the powerful space telescope, a team of astronomers spotted signs of the element that forms the backbone of all life in ten different galaxies that existed as early as 1 billion years after the Big Bang.
The detection of carbon dust so soon after the Big Bang could shake up theories surrounding the chemical evolution of the universe. This is because the processes that create and disperse heavier elements like this should take longer to build up in galaxies than the age of these young galaxies at the time the James Webb Space Telescope (JWST) sees them.
Ammonia-Based Lifeforms
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And if so, how would this hypothetical life form function?
(NewsNation) — Astronomers have once again found a potential signal of life in the clouds of Venus.
The controversial observation of molecules of phosphine was first reported in 2020. Phosphine, comprised of hydrogen and phosphorus, is a gas on Earth that is only associated with life.
Three years later, “extensive additional detections” of the molecules were presented at the National Astronomy Meeting 2023 at Cardiff University in Wales, UK, according to a Forbes report.
Rutgers University scientists believe there might be many more Earth-like exoplanets with liquid water.
Are we alone in this vast universe? Are there planets out there that harbor liquid water and ideal conditions for life to thrive?
These are some of the major questions that space scientists hope to find answers to. However, in order to answer these big questions, it is necessary to get into the nitty-gritty of what may allow water to sustain itself on other distant planets.