Masechet Taanit features a disagreement between Rabbi Yehoshua and Rabbi Eliezer about the origins of rainwater…
Tag: talmud
Lunar Observations in Rosh Hashanah
The Daf Yomi cycle just finished studying Masechet Rosh Hashanah. Mazal tov to all those who have completed this study! In Masechet Rosh Hashanah observations of the Moon play a very significant role. A major topic of study in this tractate is how the ancient Jewish “calendar” worked. In fact, it was not really a…
Black Holes in Pesachim
The very first line of Pesachim focuses attention on one of astronomers’ favorite topics: light! Or does it?
Zachor and Shamor and the Wave-Particle Duality
There are differences between the texts of the Ten Commandments that seem analogous to a the Wave-Particle Duality, a principle of quantum physics…
Machar Chodesh: What’s Hiding in the Haftarah
“Machar Chodesh” is one of my favorite haftarot… but what’s hiding within this awesome haftarah episode from David’s adventures?
The Thirteenth Month and the Constellation Ophiuchus
The thirteenth month, Adar, and the thirteenth Zodiac constellation, Ophiuchus. what is the connection?
Blessings on Comets
The apparition of Comet Catalina is an ideal opportunity to talk about the blessing said on seeing comets…
The Torah Awakens
Torah and Star Wars!
AstroRav: Torah & Astronomy 