First-Quarter Moon
By cara.arlauskas
September 23, 2026
The Moon is at first quarter today. It lines up at a right angle to the line between Earth and the Sun, so the Sun illuminates precisely half of the lunar hemisphere that faces our way.
Related Posts
July 2, 2024
Bass Foundation Gift Strengthens Outreach at McDonald Observatory
McDonald Observatory is honored to announce a generous gift of $4 million from the Harry W. Bass Jr. Foundation. Funds will support updates to McDonald Observatory’s Frank N. Bash Visitors Center and improve and expand the Observatory’s visitor experience. “We […]
July 19, 2024
Astronomers Better Identify Distance to the Cygnus Loop
The Cygnus Loop is the ethereal wreckage of a supernova explosion that occurred some 17,000-25,000 years ago. It is a cloud of dust and gas, called a nebula, steadily expanding outward from the original blast site. Because it is relatively […]
July 24, 2024
Astronomers Image Cold Exoplanet 12 Light-Years Away
An international team of astronomers using NASA’s James Webb Space Telescope has directly imaged an exoplanet roughly 12 light-years from Earth. The planet, Epsilon Indi Ab, is one of the coldest exoplanets observed to date. The planet is several times […]