Comet C/2025 A6 (Lemmon), captured from the Dark Sky Alqueva Observatory in Portugal on October 2, 2025, glows green as it nears its closest approach to Earth. Here’s how to see this rare green comet ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. As comet 3I/ATLAS continues its exciting journey through our solar ...

Comet 3I/ATLAS has gone from obscure catalog entry to one of the most closely watched objects in the sky, and the latest images suggest it may be doing something extraordinary. Instead of a smooth, ...

The interstellar comet 3I/ATLAS could be covered in erupting "ice volcanoes," new observations suggest. Researchers found evidence that as the comet approached the sun, a series of cryovolcanoes ...

The NASA mission, called Stardust, brought back the only material—other than moon rocks—taken directly from a extraterrestrial body. NASA At the threshold of a sterile lab at NASA's Johnson Space ...

The comets A6 (Lemmon) and R2 (SWAN) are visitors from the chilly fringes of our solar system, and could even be visible at the same time. By Marina Koren If you like comets, this month is shaping up ...

Comet C/2025 K1 (ATLAS) has not just brightened in the inner solar system, it has physically come apart, with observers now resolving three distinct fragments where there was once a single icy nucleus ...

Ice coverage in the Arctic sea is rapidly declining, which causes the remaining ice to melt faster and alters nutrient availability. In a University of Washington-led study, researchers show how ...