Want to help design a moon robot? NASA needs you.

A NASA-sponsored competition asks participants to improve the design of a bucket drum for moon excavation.

  • NASA wants your help redesigning the bucket drum system for its RASSOR excavator.
  • The Moon's weaker gravity and the excavator's light weight pose unique design challenges.
  • RASSOR will one day excavate regolith so it can be processed into the resources necessary for sustainable lunar exploration.
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Yes. Stress does give you gray hairs. Here’s how.

It's not just an old superstition — it's your stressed-out brain.

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  • Your brain's fight-or-flight response system is behind the appearance of premature gray hairs.
  • The sympathetic nervous system essentially burns out melanin-producing hair follicles.
  • New research may lead to a greater understanding of the connection between stress and body changes.
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Ask Sophia the Robot: What can AI teach humans?

Through experiencing time in a nonlinear way, can artificial intelligence provide us more perspective?

  • Is Sophia the Robot, of Hanson Robotics, conscious? Not quite, she says. Instead, she reflects the consciousness of humans in the same way the moon reflects the light of the sun.
  • While we don't know if humans possess free will, she advises us to act as if we do. We can benefit from this.
  • So, what can humans learn from robots? Artificial intelligence can view the world in a way that's more objective, being present while still able to look toward the future and the past.

ESO astronomers observe exoplanet where it rains molten iron

The ESO finds another exoplanet that's definitely not a place for us to go.

Image source: diversepixel/MrVander/Shutterstock/Big Think
  • WASP-76b is an extremely hot planet whose cooler side has a surface temperature of 1,500° C (2732° F).
  • Iron that evaporates in the heat of the planet's day side rains down in molten form on the night side.
  • ESO learned more about the planet's intense climate thanks to its new ESPRESSO (Echelle Spectrograph for Rocky Exoplanet and Stable Spectroscopic Observations) instrument.
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New evidence that teeth can fill their own cavities

A drug developed to combat Alzheimer’s Disease can trigger regeneration of tooth dentin.

Image source: Contrail/Shutterstock
  • New research into the drug Tideglusib clarifies what it can do for damaged teeth.
  • Tooth dentin can be regrown instead of needing to be replaced with man-made composite.
  • Only particular cavities need apply.
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