For many, dolls creep us out. Their lifelike - but not quite human - aspect can trigger the uncanny valley effect. Hear more from scientists about this effect.
Auriga the Charioteer is a north circumpolar constellation, best viewed on autumn and winter evenings. Its star Capella is the 6th brightest star in the sky.
Kelly Kizer Whitt writes and edits some of the most fascinating stories at EarthSky.org. She's been writing about science, with a focus on astronomy, for decades. She began her career at Astronomy Magazine and made regular contributions to other outlets, including AstronomyToday and the Sierra Club. She has nine published books, including a children's picture book, Solar System Forecast, and a young adult dystopian novel, A Different Sky.