Hurricane Ida seen by NASA and more: Understand the world through 9 images

Researchers found dogs are able to tell the difference between intentional and unintentional behavior by humans. Dogs in the study were less likely to go after treats that they had been intentionally denied.

A study by psychologists found that believing two people have similar personalities makes observers perceive them as looking alike. The finding shows that visual perception can be biased by knowledge and beliefs.

Researchers developed a stretchy liquid metal device that turns mechanical energy from movement into electricity and works even underwater. The device could be used in medical applications or to harvest power from ocean waves.

Smoke from wildfires in California was visible from National Weather Service and NOAA satellites as it spread across the United States. The 2021 wildfire season is predicted to be the most destructive on record.

An ESA experiment revealed microbes are able to extract vanadium — used to strengthen steel — from rock in microgravity. The process, known as biomining, could help future astronauts obtain materials they need in space, rather than relying solely on shipments from Earth.

Using a new microscopy technique, researchers captured a clear image of one million neurons firing in a mouse’s brain. The new visualization method could help scientists examine brain activity more closely than ever.

Twitter CEO Jack Dorsey shared a photo of SpaceX’s Starship during a trip to Starbase in Texas. The photo shows the rocket’s heat tiles, designed to withstand the incredible heat generated on atmospheric entry.

NASA captured Hurricane Ida making landfall in Louisiana. Hurricane Ida is estimated to be the fifth strongest hurricane ever to hit the continental United States.

NASA’s Perseverance rover shaved off the outer layer of a rock dubbed Rochette to examine whether it’s a good candidate for sampling. Collecting rock samples for study is a major part of Perseverance’s Mars mission.