Breakthrough in creation of gamma ray lasers that use antimatter

Superpowerful lasers for next-generation technologies are closer to existence.

  • A new study calculates how to create high-energy gamma rays.
  • Physicist Allen Mills proposes using liquid helium to make bubbles of positronium, a mixture with antimatter.
  • Gamma ray lasers can lead to new technologies in space propulsion, medical imaging and cancer treatment.
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15 holiday gift ideas for space fans and future astronauts

From anti-gravity pens to cool model kits, these space-themed gifts will make any star gazer very happy.

Image Credit: NASA
  • Since the dawn of time humans have been fascinated with the stars and with space.
  • This holiday gift guide will help you shop for the NASA fan on your list.
  • From socks to laser projectors, there is something for space fans of all ages.
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Distant cosmic body renamed over Nazi backlash

The object, originally dubbed "Ultima Thule," was renamed to "Arrokoth" due to the connection between the word "Thule" and the Nazis.

NASA
  • When the New Horizons probe originally visited Arrokoth, the most distant celestial body to have ever been visited by a spacecraft, NASA researchers nicknamed the body "Ultima Thule."
  • Thule refers to a distant mythological civilization. Although it originated in ancient Greek and Roman literature, the Nazis co-opted the term to refer to a mythological homeland of the Aryan people.
  • The new name, Arrokoth, is Powhatan for "sky."
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Is the universe controlled by gigantic structures?

The idea that celestial objects exist within utterly immense cosmic structures is becoming inescapable.

Image source: Mike Rosecope/procy/Shutterstock/Big Think
  • New findings in astronomy are making some astronomers doubt our basic model of the universe.
  • Alignments of celestial objects suggest that they may be embedded in large-scale structures.
  • Galaxies too far apart to be influencing each other are moving through space together.
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WATCH: Dinosaurs traveled other parts of Milky Way than humans

Dinosaurs never left Earth, but they still traveled millions of miles through the Milky Way galaxy.

Dr. Jessie Christiansen
  • A new video shows how life has evolved on Earth during the planet's most recent revolution around the Milky Way, also known as one galactic year.
  • A galactic year is about 220 million years, and it was the beginning of the Jurassic period the last time Earth was at this point in its revolution.
  • How will Earth look on its next galactic birthday? It's impossible to know for sure, but a few events seem inevitable.
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