In my book, "Invitación al estudio de la aritmética de curvas elípticas" (september, 1993) I posted these "exceptional" examples that I had a hard time finding and, in those days, I did not know of a conjecture by Paul Erdös that my three examples proved. Two years after, July...
(Image credit: Johannes Kepler/PD-US) How did astronomers discover that there is such a thing as the perihelion and aphelion? Did they realize the sun was bigger or smaller during certain periods of the year? The answer is no. Edward Bloomer, an astronomer at the Royal Observatory in ...
What did Galileo do to experiment with gravity? Galileo: Galileo was an Italian scientist, mathematician, and astronomer who revolutionized the way we understand the world. Galileo developed a working telescope that allowed him to observe the moons of Jupiter and the phases of Venus that became ce...
When the physical examination has come to an end, a lesson is sometimes the next thing on the ETs' agenda. The human subject might observe images on a screen depicting a seemingly dying planet, or devastating earthquakes, tsunamis, tornadoes, or war destruction on planet Earth. 46% of the ...
Its extensive, ragged ray system intermingles with that of the smaller crater Kepler to its southwest. The very bright crater Aristarchus positioned northwest of them occupies the southeastern corner of a diamond-shaped plateau that is one of the most colorful regions on the moon. NASA orbiters ...
a shift that baffled those who did not speak the new language of knowledge. The early modern astronomer and fact-enthusiast Johannes Kepler compared his work to a hen hunting for grains in dung. It took a century for those grains to accumulate to a respectable haul; until then, they looked...
I would want to observe if wild birds in forested areas, how much of their diet in a broad sense comes from ticks... if its a small enough number, its probably good for ticks to go, even for the birds due to possibility of disease spreading and viruses through the blood in the ...
Kepler! This great landmark crater named for Johannes Kepler only spans 32 kilometers, but drops to a deep 2750 meters below the surface. It’s a class I crater that’s a geological hotspot! As the very first lunar crater to be mapped by the U.S. Geological Survey, the area around ...
Did Kepler assume gravitational force was constant with distance? What is the difference between astronomy and astrophysics? What is an extrasolar planetary system? What force causes the tidal bulge on the side of Earth opposite the moon? How are the event horizon and Schwarzschild radius related?
Asalchemyand astrology evolved, the participants becamemore deliberate and organized– what might now be called more scientific – about their studies. That shift eventually led to important findings in chemistry, such as those byLavoisierandPriestleyin the 18th century. In astronomy,KeplerandNewtonhims...