NEOs are near-Earth objects, asteroids and small comets that sweep near Earth and have the potential to cause harm. Arecibo Observatory in Puerto Rico has, since the 1990s, been finding about 60 to 120 of these objects every year.

Nearly 40,000 fires are burning in Brazil’s Amazon rainforest, the latest outbreak in an overactive fire season. Don’t blame dry weather, say environmentalists. These Amazonian wildfires are a human-made disaster.

Arecibo in Puerto Rico was completed in 1963. In recent years, it has weathered multiple hurricanes. The emergency supplemental funds - supported by the U.S. Congress - represent an investment in the future of this large, famous and much-loved radio dish.

Learn what it would be like to travel to Chile - sometimes called astronomy's world capital - in this final report from Robert Pettengill with the Astronomy in Chile Educator Ambassador Program. Thank you for your dispatches, Rob!

A USGS study identified plastic in more than 90% of rainwater samples taken from across Colorado.

Research at one of the world's clearest, cleanest lakes suggests the problem of microplastics is widespread in freshwater systems and not just in oceans.

When Israel's Beresheet lunar spacecraft crashed in April 2019, there were thousands of microscopic, dehydrated tardigrades - water bears - aboard.

For mosquitoes, finding the next blood meal is all about smelling and seeing. It's our breath that gives us away.

This short video, just over a minute long, takes you on a journey from 1991, when no exoplanets were known, to today's 4,003+ known exoplanets. Why the plus? According to the NASA Exoplanet Archive, the number of known exoplanets has already jumped up to 4,031 and counting!

Robert Pettengill reports from the busy ACEAP (Astronomy in Chile Educator Ambassador Program) annual trip, happening now in Chile.