Posted by Larry Sessions in Astronomy Essentials | Clusters Nebulae Galaxies|3 days ago
Myriads of galaxies, visible only to those with medium-to-large telescopes, shine among the stars in the “Realm of the Galaxies.” Study of the Coma Cluster of galaxies aided in the discovery of dark matter.
April 2021 showcases 3 bright planets. Mars is the only easy-to-see bright planet in the evening sky. Jupiter and Saturn adorn the early morning hours. Mercury and Venus hover too close to the sun’s glare for easy viewing.
When the asteroid labeled 2001 FO32 sweeps closest to Earth on March 21, 2021, it’ll be moving at such a fast pace that observers using telescopes might be able to detect its motion – its drift in front of the stars – in real time. Charts and info here.
Posted by EarthSky in Astronomy Essentials|1 month ago
Did you see the awe-inspiring total solar eclipse of August 21, 2017? Millions across North America witnessed it. When and where will the next North American total solar eclipse take place? Turns out … it’s sooner than you might think.
What are the best solar system and deep-sky objects to view to get the most out of your binoculars? From moon-encircled worlds to starry knots in the Milky Way, our list makes the sky’s wonders easy to find.
Posted by Deborah Byrd in Astronomy Essentials | Earth|2 months ago
If you considered only Earth’s brightness, you could still see our world from as far away as the orbit of the 8th planet, Neptune. In practice, though, from that distance, Earth would be lost in the sun’s glare. How does Earth look from space? Spacecraft photos tell the tale.
Asteroids and comets are generally composed of different stuff. They both orbit our sun, but, for the most part, reside in different parts of our solar system. Yet some rare objects display characteristics of both asteroids and comets.
Meteorite hunters find terrain to hike in that is light-colored, with few plants to obscure the ground. They look for rocks that are dissimilar to their surroundings. Later, they analyze the properties of unusual rocks to see if they’ve discovered a meteorite.