Snapshots July

• Astronomers have discovered a massive object orbiting a brown dwarf every 170 days on an oval path. • The object is estimated to be 90% as massive as Jupiter, making it an exceptionally large satellite. • This discovery is a milestone in the search for exomoons and challenges existing scientific definitions by blurring the line between a moon and a planet.

• Scientists have solved the "reverse sprinkler problem," a long-standing physics puzzle regarding the rotation direction of a sprinkler that sucks fluid inward. • Through extensive testing, researchers determined that a reverse sprinkler rotates in the opposite direction of a standard sprinkler due to centrifugal forces creating asymmetric flow. • This finding clarifies a complex mechanical behavior and contributes to the broader understanding of fluid dynamics and rotational motion.

• A Thai study investigated how varying living conditions in animal shelters impact the physical and mental health of dogs. • Researchers compared three facilities, finding that dogs with the most space and regular enrichment, such as toys and human interaction, exhibited the lowest stress hormone levels. • These dogs also demonstrated normal metabolic profiles and a healthier balance of gut bacteria compared to those in more restrictive environments.