Instead of looking at the relative humidity, pay attention to dewpoint
Dewpoints in the 40s and 50s mean dry air, low 60s mean medium-dry air, high 60s and 70s indicate steamy conditions.
All posts by Bob Berman
A focus on the strange Evening Star
During the next three months, from now through September, Venus will visibly shift to the left. Each evening at nightfall, it will still hover at about the same height. But it will continually migrate south, or leftward, as it marches through the zodiac through Cancer, Leo, Virgo and into Libra.
How might extraterrestrials communicate with us?
We always assume aliens would know about circles and pi, and realize that hydrogen is the element that dominates the universe, even though most humans don’t know these things.
Do we live on a flat Earth?
Here’s how to determine Earth’s shape without trusting the government, astronaut testimony or spacecraft images.
Fascinating facts about the Evening Star
The night’s brightest object is the Moon, of course. But the second-brightest? Surprisingly, most people don’t know. That’s why a dazzling apparition can now dominate the western sky, shining a hundred times more brightly than the brightest stars, and yet travel incognito. It’s Venus, the Evening Star, and she’s in her glory from now through August.
Today’s strange Sun: Cycle 24 stays weird
Earth’s climate gets cooler when there are fewer solar storms. An extreme example happened between 1645 and 1715, when the normal 11-year sunspot cycle disappeared! This period, called the Maunder Minimum, was accompanied by bitterly cold winters in the American colonies. Fishing settlements in Iceland and Greenland were abandoned. Icebergs were seen near the English Channel. The canals of Venice froze. It was a time of great hardship.
The space race turns 60
Everyone so assumed the US would create the first satellite that it was nationally traumatic to watch the Russian “star” glide overhead.
Pi Day and Universal Numbers
Pi represents the ratio between any circle’s diameter and its circumference, which is roughly 3.14. You probably know number freaks who have memorized the number to 100 decimal places. I’m one of them.
Pulled by the Moon: What’s really happening
This always confuses people, who think, “If I’m made mostly of water, and the Moon pulls untold tons of seawater, why shouldn’t the Moon personally affect me?”
The year’s best stars
This week we face into the winter Milky Way, the spiral arm that’s opposite the galactic core. The Aztecs and Mayas regarded this luminescent band as the path taken by the newly departed en route to heaven. In medieval Europe it was called by its Latin name, Via Galactica, meaning “Milk Street.”