Ejnar Hertzsprung (b. 1873) initially trained as a chemical engineer before commencing his significant astronomical work in 1901. He independently identified the distinct dwarf and giant stellar ...
Step outside tonight in the early evening, when Sagittarius lies above the southwestern horizon. Globular cluster M22 shines brightly at magnitude 5.1, readily observable with binoculars or any size ...
Comet C/2025 A6 (Lemmon) is currently visible in the predawn eastern sky, initially positioned within the constellation Ursa Major. Its perigee, or closest approach to Earth, is scheduled for October ...
Experience the awe of ancient history and the spectacle of a rare celestial event on this 5-day journey to Luxor, centered around the August 2 total solar eclipse. With an incredible totality of 6 ...
The upcoming Full Moon, occurring at 11:48 P.M. EDT, is designated as the traditional Hunter’s Moon, and for this specific event, also as a Super Moon and the 2025 Harvest Moon. A Super Moon is ...
The Biosphere 2 facility, specifically its Landscape Evolution Observatory (LEO), serves as a research platform to investigate how life transforms landscapes, ranging from local environments to ...
The nearly Full Moon passes 4° north of Saturn at 11 P.M. EDT and sits close to the ringed planet all night. Despite our satellite’s proximity, you’ll want your telescope trained on Saturn this ...
Let’s peer into Cetus the Whale to spot 1 Ceres this evening, one day past opposition and glowing at magnitude 7.6, within the reach of binoculars or any small scope. You can use this same string of ...
Before you set your telescope up next time, read through the four following items. I hope one or more of them will help you get more from your session. You’ve placed your solar filter on the front of ...
An ancient solar eclipse profoundly influenced a military conflict near Corinth, involving Spartan forces led by Cleombrotus and Persian invaders under Xerxes I. Herodotus documented this event, ...
The Moon reaches apogee, the farthest point from Earth in its orbit, at 5:46 A.M. EDT. At that time, our satellite will stand 251,996 miles (405,548 km) away. With the Moon sinking low in the hours ...
A Full Moon occurs when the Earth is between the Sun and the Moon. The Moon's orbit creates different phases, including a Full Moon. Full Moons have traditional names, like the Sturgeon Moon. The 2025 ...