Milky Way photos from the 2021 season

Milky Way season is wrapping up as September and October approach. Enjoy this gallery of some of the best photos of our galaxy from our readers.

Mars ice is dusty and could melt, study says

Researchers at two universities in the U.S. have found that dusty ice on Mars may melt just below the surface. The liquid water produced could potentially support microscopic life.

Aurora alert! Pair of CMEs to jolt Earth’s magnetic field

Aurora alert! A pair of coronal mass ejections will reach Earth September 1-2, 2021. Though not dangerous to satellites or the grid, they might cause auroras.

Earth’s northernmost island, found by accident

An Arctic expedition has discovered Earth's northernmost island in July. It lies north of the former title-holder, Oodaaq, off northern Greenland.

Reptiles as pets: dispelling the myths

Increasingly, people oppose owning reptiles as pets, believing they pose a danger to public health or are too cold to love. Why do reptiles get a bad rap?

Hurricane Ida: 4 essential reads about New Orleans hurricane risk, and more

Hurricane Ida hit the Louisiana coast with 150 mph (240 km/h) winds on August 29, 2021, 16 years to the day after Hurricane Katrina devastated New Orleans on nearly the same path. What does climate change have to do with these powerful storms?

Does outer space end, or does it go on forever?

Can you travel to outer space and never stop? Science can tell us a lot. But some things we don’t know yet, like whether space just goes on forever.

What flows into a galaxy ‘cleaner’ than what flows out

Pure hydrogen and helium gas flows into a galaxy. It's used to make new stars. Those stars make new elements, which are later released back to intergalactic space.

Hycean planets might be habitable ocean worlds

Hycean planets are huge, hot worlds covered by oceans, with thick hydrogen atmospheres. They might be key to discovering life beyond Earth.

Can we recreate dinosaurs from their DNA?

Can we recreate dinosaurs from their DNA? Maybe we could, if dinosaur DNA still existed. But DNA breaks down after some 7 million years.