Reasons to Believe

Life on Other Planets

  • Multiverse Musings - Are We Simulations?

    In past Multiverse Musings TNRTBs, I have described not just one, but two bizarre implications of the multiverse. This TNRTB addresses a third.

    Due to its box-office acclaim, most people are familiar … more

  • Designed to Live, Designed to Die

    "Why don't we see new species emerging now?" Charles Darwin faced this question nearly 150 years ago when he proposed the theory of evolution. His answer–all Earth's habitats are full.

    Whether … more

  • Is Life Possible on a Moon?

    A team of American astronomers recently announced the discovery of the first known planet outside our solar system to spend its entire orbit within the “habitable zone.”1When astronomers … more

  • Does the Probability for ETI = 1?

    Earlier this fall (September 25) I had a three-minute debate on Mancow’s Morning Madhouse, a nationally syndicated radio show, on the topic “Is there scientific evidence for intelligent … more

  • Is It All a Mirage?

    Observers of Mars in past centuries were filled with hope that Mars was certainly inhabited by intelligent creatures that were responsible for major canal systems carrying water across the planet. … more

  • Planet Migration Tests Solar System Design

    Astronomers have discovered over 250 planets outside of our solar system residing in over 200 different planetary systems. However, all of these extrasolar planets exhibit characteristics that would … more

  • When Life From Mars Isn't

    When the Mars meteorite ALH-84001 discovered in 1984 in the Antarctic, was announced in 1996 it got a lot of media attention. Even President Clinton commented. At the time it was very exciting for … more

  • Searching for Earths

    I once saw a toy that served as a visual example of the saying "one in a million". It consisted of a clear plastic ball about 4 inches in diameter filled with literally a million little plastic cubes. … more

  • Planet Rotation Design

    If the planet rotates too slowly, the temperature differences between day and night will become too extreme. If the planet rotates too quickly, the jet streams will become too laminar and too stable, … more

  • Ideal Biomarker

    Part of the problem is that in their search for signs of present or past existing life beyond planet Earth, astrobiologists have been attempting to detect biomarker molecules that already are known to … more

  • Viking Invasion of Mars Thwarted

    The possibility of life on Mars has held human interest for hundreds of years and has recently become an obsession for NASA.

    A number of atmospheric probes and surface craft have been sent to Mars … more

  • Natural Sugar Synthesis?

    Compulsory features for the replicating molecules of life (DNA and RNA) include five-carbon sugars, namely deoxyribose for DNA and ribose for RNA. These sugars form the backbone of DNA and RNA. … more

  • In the Habitable Zone But With No Water

    Planets around M dwarf stars have generated a lot of interest lately—especially with the recent discovery of an earth-mass planet in the region where liquid water could exist on the surface. … more

  • ET Survey Results

    ET Survey Results

    Your response to the question, Do you believe there is physical, intelligent life elsewhere in the universe?, yielded an unequivocal, unambiguous, indisputable, definite, and … more

  • Extraterrestrial life? What do you think?

    Increasingly of late I’ve come across people who believe intelligent life exists elsewhere in the universe. While scientists have yet to detect such life, it remains theoretically possible. And … more

  • Search for Reservoirs of the Building Blocks of Life

    Even the simplest life-form is orders of magnitude more complicated than anything on display at Legoland. Nevertheless, like the Legoland structures, life molecules are assemblages of a relatively … more

  • Effect of Distant Orbiters on Habitability

    A recent study by an MIT astronomer of a distantly orbiting companion to the nearby planet-hosting star HD 3651 illustrates the problems a distant relative can pose for any possible life-supportable … more

  • Smaller Stars Offer Little Hope

    The recent discovery of an Earth-sized planet around a nearby star generated a lot of excitement in the scientific community - and rightly so. For one thing, most exoplanets (planets outside the solar … more

  • UV Radiation Destroys Amino Acids

    TNRTB Archive - Retained for reference information

    Discovery of the rapid destruction of amino acids in astronomical environments continues to highlight problems in naturalistic models of … more