Wednesday, 7 August 2019
Why haven’t we seen UFOs? In a long article, Kelsey Johnson points out that an unidentified flying object can have different meanings. Many would say that it refers to aliens.
We should also keep Oxfam’s razor in place, that is, that the simplest explanation could be true.
She reminds us of the object that fell in Rockwell in the 1940s and the famous Wow signal that happened in 1977. “An extremely strong narrow-band radio signal was detected by the Big Ear radio telescope at almost exactly the frequency of a fundamental hydrogen transition line (1420.41 MHz), which we expect an E.T. civilization might use to communicate. Fast-forward 40 years, and astronomers identify a previously unknown comet that was passing by back in 1977 and could have accounted for the "Wow!" signal.”
We might also think about Fermi's Paradox. “In a nutshell, given some basic assumptions about life, one could reasonably conclude that our galaxy ought to be teeming with it. So as Enrico Fermi famously asked: "Where are they?" There are three main categories of solutions: First, life could be really, really, really hard to get going. Our very limited evidence on Earth suggests this is not so;
The second class of explanations suggests that there is, in fact, E.T. life, but we just haven't detected it. That could be because we just haven't looked very hard yet, or because we are not looking in the right way, or because they don't want us to see them. Given the age of the universe and our galaxy, if life isn't super-hard to emerge, we are statistically most likely to be osmic babies. In this context, E.T. life is likely to be millions of years more technologically advanced than we are. Thinking about how far our technology has come in the last 100 years, it is unfathomable to think what we might be capable of in a million. If we survive that long. If E.T. life is millions of years more advanced than we are, and they don't want us to know about them, I'm pretty sure we wouldn't know about them.
Then there is the third set of solutions to Fermi's paradox. These go along the lines of the following: Life has formed and evolved elsewhere. Maybe lots of times. But it doesn't exist now. There are lots of ways the universe could kill us, for example a major asteroid impact. If we were sufficiently technologically advanced, however, I give us a fighting chance. Or we might kill ourselves off. This is where Fermi's Paradox gets really depressing. We are in our technological adolescence, by which I mean we are smart enough to destroy ourselves, but maybe aren't smart enough not to do so. It could be that any civilization that becomes sufficiently technologically advanced is doomed to destroy itself.”
So we are still waiting for a signal that might never come.
Johnson, Kelsey. 2019. No E.T. Life Yet? Here's Why That's Important. Live Science (5 August)
Monday, 5 August 2019
"An international group of astronomers discovered the planet using NASA's Transiting Exoplanet Survey Satellite (TESS) earlier this year in the constellation Hydra, about 31 light-years from Earth." That corresponds to 10 trillion kilometres per year.
However, the planet that is called GJ 357 d stays quite near its sun. It is believed to be roughly twice the size of Earth and harbour six times Earth's mass. "Located in the outer edge of its host star's habitable zone, scientists believe that this super-Earth could have water on its surface."
GJ 357 b, a "hot Earth" that orbits 11 times closer to its host star than Mercury does to the sun and likely has a surface temperature of around 254 degrees Celsius or 490 degrees Fahrenheit.
So; it's not a healthy place to stay, unlike the Earth.
Rabie, Passant, 2019.Could There Be Life? This Newfound 'Super-Earth' May Be Habitable. Space com (31 July).
Saturday, 3 August 2019
"Former President Barack Obama along with actor Leonardo DiCaprio and singer Katy Perry are gathering this week for Google Camp’s summit in Sicily, Italy, where they’ll discuss saving the planet."
This is a far cry to what the Swedish teenager Greta Thunberg is doing. She will travel to the US in a zero-emissions ocean-going yacht.
According to mail online, Google has spent $ 20million for the conference. Prince Harry gave a “barefoot speech” at a secretive Google Camp climate change conference in Italy Actually, Barack Obama wasn’t seen there.
“How exactly will such A-listers contribute to that cause? By flying on 114 private jets, an Italian news site reported.
If the guests took 114 flights from Los Angeles to Palermo, the private jets would release 100,000 kilograms of CO2.”
Luksic, JAMES . 2019. Major Hypocrisy: Obama, A-Listers Flocking to Google Summit on Climate Change in Private Jets, Yachts, Helicopters, Western Journal (July 31).
Thursday, 1 August 2019
Here’s what Science says:
“Three newly discovered exoplanets could help researchers redefine the shaky line between rocky and gaseous planets, according to new observations from NASA’s Transiting Exoplanet Survey Satellite (TESS). TESS, which marks its first year of operations this month, spotted the trio of planets some 73 light-years away from Earth. The exoplanets are of a type that does not exist in our solar system, being between the Earth and Neptune in size.
Three newly discovered exoplanets could help researchers redefine the shaky line between rocky and gaseous planets, according to new observations from NASA’s Transiting Exoplanet Survey Satellite (TESS). TESS, which marks its first year of operations this month, spotted the trio of planets some 73 light-years away from Earth. The exoplanets are of a type that does not exist in our solar system, being between the Earth and Neptune in size.”
However, there are very few planets that vary in sizes between 1,5 to 2 Earth radii This study does not solve, how the Earth was made. We know from Genesis that God created the world for us and it is the right size for us.
Clery, Daniel. 2019. Newly discovered exoplanet trio could unravel the mysteries of super-Earth formation. Science (29 July).