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  1. A distinguished astronomer sees evidence of extraterrestrial life

    Feb 13, 2021 · Extraterrestrial” considers the possibility of intelligent life elsewhere, but its core message, an update to Sagan’s maxim, is aimed squarely at life on Earth: “Extraordinary ...

  2. Is There Any Evidence for Extraterrestrials Visiting Earth?

    Feb 07, 2021 · Early UFOlogists speculated that unidentified craft came from Venus or Mars, as they are the planets that are closest to Earth, however no evidence of extraterrestrials on either planet has ever been found. Low earth orbit is constantly being extensively monitored by powerful radar and long-exposure space-based cameras.

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  4. Extraterrestrial life - Wikipedia

    3 days ago · Extraterrestrial life is hypothetical life which may occur outside Earth and which did not originate on Earth. Such life might range from simple prokaryotes (or comparable life forms) to intelligent beings and even sapient beings, possibly bringing forth civilizations which might be far more advanced than humanity.

  5. Extraterrestrial real estate - Wikipedia

    Feb 10, 2021 · A prominent environmental impact on extraterrestrial planets is space debris. Human-made objects left in space pollute the specific planet and take up prime real estate, causing a big problem. If orbital debris continues to build up, parts of space near the earth will become so polluted that certain operations will not be attainable.

  6. Opinion | Aliens Must Be Out There - The New York Times

    Feb 11, 2021 · Now, in a dazzling new book, “Extraterrestrial: The First Sign of Intelligent Life Beyond Earth,” the astrophysicist Avi Loeb offers a forceful rejoinder to Fermi. Loeb, a professor at Harvard,...

  7. Today’s question – Do you believe alien life has visited Earth?

    Feb 15, 2021 · Visit the post for more. Click to share on Twitter (Opens in new window) Click to share on Facebook (Opens in new window)

  8. About | Astrobiology

    Feb 18, 2021 · But that extraterrestrial presence on regular display is, of course, a fiction. No life beyond Earth has ever been found; there is no evidence that alien life has ever visited our planet. It’s all a story. This does not mean, however, that the universe is lifeless.

  9. Extraterrestrial - RationalWiki
    • Intelligent Extraterrestrial Life
    • Drake Equation
    • The Usual Suspects
    • Wow! Signal
    • Contact with Earth
    • See Also
    • External Links

    The narrower and arguably more common definition of "extraterrestrial" is "an intelligent life form that is of extraterrestrial origin" — an alien, in other words. Normally they are thought of as aliens who visit this planet, for whatever reason that aliens might want to visit this planet. This is a pretty cool idea because, assuming communication is even possible with such beings, it would afford the opportunity to compare observations about the nature of reality. This is also cool because, along with spaceships and laser guns, the encounter with aliens is every nerd's dream. As such it is the subject to a lot of crackpot thinking and conspiracy theories. These beliefs range from aliens communicating telepathically with people — similar to mediums talking to the dead — to deliberate coverups by world governments and reverse engineering of alien technology. Despite the prevalence of such beliefs, and the fantastic and attractive narratives that they produce, they are most likely com...

    The Drake Equation is an attempt to quantify the likelihood of alien civilizations being capable of communicating with humans on Earth. Named after radio astronomer Frank Drake, it contains a number of variables such as number of stars in a galaxy, number of planets suitable for life, etc. An interactive version can be found here. One of the main issues with the Drake Equation is the estimated life span of any advanced civilization, i.e., once it becomes advanced enough to communicate, how long before it blows itself up? While any value for this is necessarily speculative (we're dealing with a sample size of zero, since our only example is our own society, which we can't know how long will last), Drake's original estimate for this value is 10,000 years, while a more modern approach by Michael Shermer set it to only 420 years.This means that any signal received from space (given the enormous distances between stars) could well be from an already long-dead civilization. However, the f...

    What we know so far

    The aliens that have supposedly come to Earth have been described as appearing in many different forms. This indicates either that planet Earth is improbably interesting to several varieties of aliens — or that the reports themselves are the result of hyperactive human imaginations.[note 1] At the same time, the spectrum of described alien appearances — differing enough from each other to qualify as separate species — is populated by examples of aliens that are all generally anthropomorphic (...

    The alien zoo

    Either way, "respected"[note 14]scholars have identified several different species of alien. They include: 1. Designers: Also known as the Elohim (singular Elohah), they look exactly like a small version of a Japanese person because, according to Raelians, they made us in their image. They also gave messages to different populations through religious figures like the Buddha, Jesus, Muhammad, and Moses. 2. Greys: These are the most famous popular aliens. They are short and have really big head...

    The Wow! signal was a radio signal which was received by the Big Ear Radio Telescope on August 15th, 1977. It consisted of 72 seconds of unusually organized signals. There are many speculations on the origin of the signal, with one of them being that the signal is of alien origin. Despite the very odd organization of the signals, this is not definitive proof of alien life; it is a stretch to jump to that sort of conclusion. Nevertheless, many conspiracy theorists believe that the Wow! signal is a direct attempt at aliens trying to send us some form of a message: the content of this "message" can range from an innocent greeting to a more ominous warning as conspiracy theories usually tend to derail in that direction. In 2017, the Buzzkill Squada team of researchers with the Center of Planetary Science determined that the sound came from the 266/P Christensen comet, which was unknown in 1977 but occasionally emits unusual frequencies due to an attached hydrogen cloud.

    Some of the aliens' favorite hobbies while on our planet include: 1. Building the Giza pyramids 2. Making crop circles 3. Abducting Texans for bizarre sexual experiments 4. Using their "flying saucers" to buzz unsuspecting drivers, often in, again, Texas 5. Taking our jobs and sponging off our welfare systems 6. Hollowing out the Earthto build their secret bases 7. Eating the dinosaurs 8. Mutilating cattle 9. Anal Probing In November 2011, the United States White House officially stated that the US (and as far as they knew, every other country) has never had contact with alien life. Of course, they also said they do not know who shot Kennedy; it's apparent who's lying, isn't it?

  10. Sorry, But Hostile Space Aliens Aren’t Likely To Hide From Anyone

    Jan 30, 2021 · The message encodes several things: the numbers 1 to 10, the basic chemistry of life on Earth, the double helix structure of DNA, Earth's population, a graphic of the Solar System, a human figure ...

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