Showing posts with label Rare Earth. Show all posts
Showing posts with label Rare Earth. Show all posts

Sunday, November 17, 2019

Four Reasons To Believe in God From Science

As a scientist who studies the most fundamental particles and forces in the universe, I tend to only accept something as true if it is supported by abundant objective evidence. You might think that a person like me, who wants testable reasons for everything, could never be a Christian since Christianity is based on faith in God. However, real Christian faith as described in the Bible is always based on evidence and is more accurately defined as “trusting God based on the evidence that he is trustworthy.” Since I am an experimental particle physicist who needs facts to back up my beliefs, I have studied many of the objective reasons to believe and trust in God from history, science, philosophy, sociology, and other academic disciplines. Perhaps some of my findings will give you additional tangible reasons to believe in God.

Here are Four Reasons to Believe in God from Science:

Sunday, June 23, 2019

Is There Life Out There? Another Step Toward Its Improbability

It seems that much of the current research in astrophysics and space science is focused on the search for extraterrestrial life. Whether we are sending probes to Mars, searching for extra-solar planets, or looking for water on moons and planets in our solar system, a major goal of these efforts is discovering environments that are suitable for life, or even finding evidence of life itself. The question of whether or not other life exists is not only an important scientific question, but maybe even a philosophical, sociological, psychological, and theological question as well.

Much of the search for extraterrestrial life has centered on whether or not a planet or moon is in an orbit that permits its surface to retain liquid water. The presence of liquid water is certainly one of the most important requirements for complex life. If a planet's location is too close the star it orbits then it will be too hot and water will boil away, and if a planet is too far from the star, all the water will freeze. The habitable zone is the region in which the planet's orbit is just the right distance from the star to harbor liquid water on its surface.

Saturday, March 10, 2018

Are Earth-like Planets Common?

It seems that every few months newspaper and magazine headlines will declare something like "Scientists have discovered an Earth-like planet." Such headlines probably lead the reader to imagine a planet with an environment much like we see on Star Trek or Star Wars where we could land our spaceship, take off our spacesuit, and frolic around the countryside. But what do scientists mean when they say that they have discovered an "Earth-like" planet? How likely is it to find a planet that can support higher life forms (defined as anything more complex than bacteria)? Are planets like the earth common or rare? Let's explore the answers to these questions.

When scientists say that an Earth-like planet may have been discovered, they actually mean one of three things. Either (1) the planet is in such an orbit around its central star that allows the temperature on the planet to possibly harbor liquid water, or (2) the planet is about the same size as the earth, or (3) the planet is solid and rocky rather than gaseous. Of course any one of these criteria, or even all three, does not actually give us a true Earth-like planet. We know that our moon is in the correct location to contain liquid water, but it is not "Earth-like." We know Venus is about the size of the earth, but it is not "Earth-like." We know that Mercury is rocky and not gaseous, but it is not "Earth-like." So none of these criteria really give an Earth-like planet. Headlines and sound-bites are not meant to be precise but to draw attention, and it is much more exciting to proclaim an "Earth-like" planet has been found rather than a "Venus-like" planet (if even that could be claimed).