No, this is not a still from David Lynch's Dune. But it could be! The Cat's Eye Nebula, or NGC 6543, is one of the better known planetary nebulae for stargazers, according to NASA. But this image is slightly altered: it's a false-color picture processed to show off the nebula's gaseous, three-light-years across halo.
More from NASA:
Made with data from the Nordic Optical Telescope in the Canary Islands, the composite picture shows extended emission from the nebula. Planetary nebulae have long been appreciated as a final phase in the life of a sun-like star. Only much more recently however, have some planetaries been found to have halos like this one, likely formed of material shrugged off during earlier active episodes in the star's evolution. While the planetary nebula phase is thought to last for around 10,000 years, astronomers estimate the age of the outer filamentary portions of this halo to be 50,000 to 90,000 years.
Image credit: NASA
Upstreamism advocate Rishi Manchanda calls us to understand health not as a "personal responsibility" but a "common good."
- Upstreamism tasks health care professionals to combat unhealthy social and cultural influences that exist outside — or upstream — of medical facilities.
- Patients from low-income neighborhoods are most at risk of negative health impacts.
- Thankfully, health care professionals are not alone. Upstreamism is increasingly part of our cultural consciousness.
No, depression is not just a type of 'affluenza' – poor people in conflict zones are more likely candidates
- Often seen as typical of rich societies, depression is actually more prevalent in poor, conflict-ridden countries
- More than one in five Afghans is clinically depressed – a sad world record
- But are North Koreans really the world's 'fourth least depressed' people?
America isn't immune to attempts to remove books from libraries and schools, here are ten frequent targets and why you ought to go check them out.
- Even in America, books are frequently challenged and removed from schools and public libraries.
- Every year, the American Library Association puts on Banned Books Week to draw attention to this fact.
- Some of the books they include on their list of most frequently challenged are some of the greatest, most beloved, and entertaining books there are.
- Oumuamua, a quarter-mile long asteroid tumbling through space, is Hawaiian for "scout", or "the first of many".
- It was given this name because it came from another solar system.
- Some claimed 'Oumuamua was an alien technology, but there's no actual evidence for that.
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