In Chinese thought, spring is associated with the direction east, the sunrise direction as Earth spins us toward the beginning of each new day.
If there were no leap years, eventually February would be a summer month for the Northern Hemisphere. 2019 isn’t a leap year, but 2020 will be.
On this Valentine’s Day 2019, what the world of science suggests about the mystery we call love.
In 1963, astronomer Maarten Schmidt had a sudden revelation that quasars are exceedingly distant and unimaginably luminous. His insight changed our notion of what the universe is like.
An expert photographer of nature’s beauty on a minuscule scale, Michael Peres offers you tips on how you can photograph snowflakes.
December solstice sunrise comes at the same time for St. Augustine, Florida, and New York City. But St. Augustine has an hour more of daylight than New York. Here’s why.
On November 14, 1963, crew aboard a trawler sailing near Iceland spotted a column of smoke rising from the sea surface. A new island, Surtsey, was being born.
Mass and energy are interchangeable.
In China and other Asian countries, it’s sometimes called the Moon Festival in honor of the upcoming full moon.
American astronomer Asaph Hall discovered Phobos, 1 of the 2 known Martian moons, on this date in 1877.
What do you mean by noon? Do you define it by your clock or wristwatch? Or the gnawing in your stomach? Here’s how astronomers think about noontime.
The streaks in the photos are sun-trails – that is, they’re the sun moving in its shifting path across our sky from day to day over a 6-month period.
Cloud streets are long rows of cumulus clouds oriented parallel to the direction of the wind. Check out these cool images!
Want to brush up on your knowledge about these solar hiccups – CMEs, for short – that can ripple through our solar system and can interrupt satellites and power grids on Earth?
A recently published study confirms that native trees are most effective in hosting caterpillars, an important food for birds.
When a common year of 365 days starts on a Sunday, as it did this year, 2 Friday the 13ths are inevitable. The 1st one was in January and the 2nd in October.
For 32 years, scientists have tracked the oxygen-depleted waters that appear each summer in the Gulf of Mexico. This year’s dead zone is the biggest yet.
SG Collins explains why the Apollo moon landings on the moon in the late 1960s and early ’70s couldn’t have been faked.
On April 10, 2013, one of the largest non-volcanic landslides in the history of North America took place at the Bingham Canyon mine in Utah.
Every calendar year has at least 4, but 5, 6 or even 7 eclipses are also possible. Why don’t we see them all?
Full supermoon at March 2019 equinox