Cosmos (category filter × )

Kilometer-Long Space Tether Tests Fuel-Free Propulsion

scientificamerican.com
  • The Tether Electrodynamic Propulsion CubeSat Experiment (TEPCE) is bringing back a technology from the 90’s that could be used for star sailboats.
  • TEPCE consists of two minisatellites connected with a 1km ‘rope’, the experiment will determine how the device responds to Earth’s magnetic field in the ionosphere.
  • Success of this mission could bring about spacecrafts that don’t require fuel to move around Earth’s orbit.
  • It could also lead to a new generation of space-cleaning spaceships for getting rid of all the space junk currently floating in Earth’s orbit.

First identification of a heavy element born from neutron star collision

eso.org
  • Astronomers detected strontium, a heavy element found naturally in Earth soil, is created during a neutron star merger.
  • This is the last piece in the search for the origin of the elements, confirming rapid neutron capture as the process that creates elements heavier than iron.
  • The discovery confirms that neutron stars are made of neutrons, and that rapid neutron capture occurs during neutron star mergers.

Scientists observe mysterious cosmic web directly for first time

theguardian.com
  • First observation of gas filaments, linking a cluster of galaxies 12bn light years away, provides new insights for theories about the formation of our universe.
  • This finding adds to the theory that, after the big bang, hydrogen gas creates huge threads across space, and galaxies form in clusters of these threads.
  • The observation proved this, as researchers noticed supermassive black holes and galaxies with active star formation at the intersections of hydrogen threads.

We’re going to slam a spacecraft into an asteroid to try to deflect it

technologyreview.com
  • AIDA (asteroid impact and deflection assessment) is a global cooperation that aims to test if we could save the Earth from an asteroid aimed at our planet.
  • It will target a small asteroid orbiting a bigger asteroid, floating 6.8 million miles away from Earth.
  • NASA will start with DART (double asteroid redirection test), launching a 0,5 ton craft in 2021 to crash into the asteroid 16 months later at 14,700 miles per hour.
  • It will release a satellite before the collision to take images.
  • European Space Agency will then launch Hera, which will arrive at the asteroid in 2028 with more tools to perform a detailed study of the asteroid after the impact.

Astronauts mix cement on ISS, pave way for future space colonies

astronomy.com
  • For the first time ever, space cement has been successfully mixed on the International Space Station.
  • On one hand, it seems stronger than Earthly cement because of its surprisingly uniform density, caused by lack of strong gravity.
  • On the other hand, it may be weaker because it develops large air pockets, making it more porous than Earthly cement.
  • The material will be tested further.
  • This research paves the way towards finding out how to create concrete structures on the Moon and Mars.

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Categories

  • Science Science (53) AI Copernicus ‘discovers’ that Earth orbits the Sun
  • Psychology Psychology (53) Uncertainty and Surprise Jointly Predict Musical Pleasure and Amygdala, Hippocampus, and Auditory Cortex Activity
  • Cosmos Cosmos (25) Kilometer-Long Space Tether Tests Fuel-Free Propulsion
  • History History (14) Humans survived off rodents in the mountains during the last ice age, study says
  • Society Society (59) Majority of anti-vaxx ads on Facebook are funded by just two organizations
  • Medicine Medicine (53) Antibody injection stops peanut allergy for 2 to 6 weeks, study shows
  • Technology Technology (61) Hologram-like device animates objects using ultrasound waves
  • Nature Nature (39) Is a long-dormant Russian volcano waking up? It’s complicated