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Results for “arrested outside”

A gamma-ray powerhouse's smoking gun? Gas trail points to microquasar jets

In 2016, a binary star system emitting unusually strong gamma rays was discovered in our galactic neighborhood. Now, astronomers have found the smoking gun, or rather, a smoking trail of cool molecular gas that suggests jets emanating from a microquasar—one of the few known outside the Milky Way—are responsible.

Phys.org · Oct 30
Pulling the strings: How stem cells in the developing fruit fly brain organize their DNA from outside the nucleus

Cells are very particular about the proper locations of their contents. For example, DNA is packaged in the nucleus in a highly specific way, but researchers are still trying to understand how this happens. For stem cells in the brain of a larval fruit fly—a model organism used to study processes such as early development—the DNA is organized so that the center of each strand, called the centromere, is at the top of the nucleus.

Phys.org · Oct 30
1.9-million-year-old discovery rewrites the story of human evolution

New evidence suggests that early humans reached the Jordan Valley at least 1.9 million years ago, hundreds of thousands of years earlier than scientists previously thought. Advanced dating methods revealed that the ‘Ubeidiya site is roughly as old as the famous Dmanisi site in Georgia, placing both among the earliest known human settlements outside Africa.

Science Daily · Oct 27
How plants feel

Science shows us that, even though plants don't have brains, they seem to have a nervous system that responds to touch in remarkable ways. Robert Krulwich and puppeteer Barnaby Dixon explore the science of thigmomorphogenesis (the phenomenon of plants reacting to outside stimulae), a discussion that plants the seeds for a song.

CBS News · Jul 26