Tag: Kepler

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Searching for Other Worlds

Searching for Other Worlds
In 1999 astronomers detected the first exoplanet–a planet in another solar system. The number of planets detected orbiting around stars other than our Sun has grown to more than 3,500 today. There are billions of stars in our Milky Way Galaxy so searching for other worlds is just getting started.

NASA’s main tool for finding exoplanets has been the Kepler space telescope. The method of detecting those planets is watching for occlusions. If there is a planet orbiting a star, it will sometimes pass in front of that star from our viewpoint causing an occlusion or mini-eclipse. The planets are too small for us to see, but we can see a small dip in the light coming from the star. If the dip comes on a regular interval that means it might be an orbiting planet. The amount of the dip in light level indicates the size of the planet in relation to its star. Using this method of detection, astronomers have compiled a catalog of detected planets.

As I said, until now the Kepler telescope has been the method for finding most of these planets, but it will soon end its life. However, 2018 will be the beginning of new opportunities to look for exoplanets because of two new satellite-based observatories. Very soon NASA will launch TESS. That stands for Transiting Exoplanet Survey Satellite. By the end of the year, the European Space Agency (ESA) will launch CHEOPS or Characterising Exoplanet Satellite. (Aren’t you glad we have acronyms.)

The Kepler telescope was very good at searching for other worlds, but only in a small area of the sky. TESS will take a much wider view with the hope of finding many more. For obvious reasons, so far most of the planets detected are giant planets. TESS will be targeting bright stars in the hope of finding smaller planets that more closely resemble Earth. Astronomers will be able to target TESS more precisely toward selected stars.

It will be interesting to see what new discoveries will come from the investment of time and more than a quarter of a billion dollars. So far there have been no more than a dozen planets that even come close to being possible outposts for life. As we have said before there are many parameters required to sustain any kind of life and even more to support advanced life. We have also said many times before that whether there is life anywhere else in the cosmos has nothing to say about whether God exists. A God who is great enough to create the cosmos can create life anywhere He chooses. We are just glad He chose planet Earth so scientists can continue searching for other worlds.
–Roland Earnst © 2018

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In Reason We Trust?

In Reason We Trust?
In the March issue of Scientific American, there was an advertisement for the Freedom from Religion Foundation. They claim to be “the nation’s largest association of freethinkers, working to keep religion out of government.” Actually, they go farther than that. They strive to keep “religion,” especially Christianity, out of the public square. The headline banner of the ad is In Reason We Trust.

This particular ad features a picture of Lawrence Kraus and a quote from him. Lawrence M. Kraus is an American-Canadian theoretical physicist and cosmologist who teaches at Arizona State University. He is a leading atheist who works to reduce the influence of “superstition and religious dogma in popular culture.” You can find videos of him on YouTube debating Christians. He is the founder and director of the Origins Project at Arizona State University. Their website states that the Origins Project was “created to explore humankind’s most fundamental questions about our origins … ranging from the origin of the universe to the origins of life, modern humans, consciousness, culture, complex systems, and technology.” Dr. Kraus’s Origins Project will not consider the possibility of God in the origins discussion.

The In Reason We Trust ad quotes Kraus saying, “Lack of understanding is not evidence for God. It is evidence of lack of understanding, and a call to use reason to try and change that.” I agree that a lack of understanding is not evidence for God. In the past, humans could not understand things such as lightning or seasons or trees or insects, so they invented gods to explain those things. They saw the world as chaotic, and even their gods were chaotic and capricious. As long as their worldview was chaotic, they could not pursue science. That is why the extremely intelligent ancient Egyptians, Greeks, and Romans did not achieve scientific understanding even though they created great works of engineering and architecture.

Science requires a worldview that sees order and laws. It was the Judeo-Christian worldview that led to modern science. The Judeo-Christian worldview sees logic and wisdom and order in nature because it was created by a wise and loving God. It is only with that understanding that you can begin to look for that order and study those laws to see how God works. Scientists like Lawrence Kraus and the writers and publishers of Scientific American are standing on the shoulders of Christians like Kepler, Galileo, Newton, and many others. Those men understood that the world was designed with order and wisdom. They looked for that wisdom, and they used not only reason, but experimentation to see how things work—to see how God did it.

Many scientists today have forgotten the very basis for the science that they practice. Yes, Kraus is right that the lack of understanding is not evidence for God. At the same, our ability to understand how God works does not show that there is no God. It shows that God has created us in His image with the ability to understand and create with reason and wisdom. Instead of In Reason We Trust, we should be thinking, “I trust my reason because it is a gift from a rational God.”
–Roland Earnst © 2018