Observations of this relatively rare phenomenon offers both scientific and educational opportunities.
Tasked with mapping the motions of stars in our galaxy, the European mission is doing so much more.
When humans age, environmental factors can play a huge role in our health—the same is apparently true for galaxies.
In cosmology, Buddha strikes again.
What do you call an orphaned moon with planetary ambitions?
To avoid the eighth-circle-of-hell tedium of grading, lean on your students’ collaborative creativity and have some fun.
Formal and informal learning have their pros and cons, but the ASP is at the intersection working to get the best out of both.
Another day, another "habitable" exoplanet discovery—and more headlines suggesting that aliens live there.
Feedback from active galactic nuclei may influence a galaxy’s ability to form stars.
The Summer 2019 issue (vol. 48 no. 3) of Mercury magazine is online for ASP members, featuring everything from black holes, awesome radio telescopes, mind-blowing astrophysical concepts to educational matters.
Despite decades of searching for dark matter, we’ve come up empty handed. So, what is the alternative?
Galaxies live inside dark matter halo “houses”—but there seems to be a lot of empty homes out there.
Some galaxies are extremely massive, compact and filled with dust—how they became so extreme remains a mystery.
Before we had high-resolution observations of the Sun, explanations for sunspots ranged from the ridiculous to the sublime.
Computing celestial alignments may be routine today, but for medieval astronomers it was a major undertaking.
Lunar eclipses can help us understand meteoroid impacts and exoplanet atmospheres.
What’s careening through the galaxy at 2.5 million miles per hour and screaming with gamma-rays?
There are some strange similarities between ultra-faint dwarf galaxies and globular clusters—with dark matter anchoring both.
How the event helped a 14th Century astronomer reconnect with Ptolemy’s era.
After decades of wondering, the Event Horizon Telescope has revealed what a black hole really looks like. [Feature excerpt]