Asteroid impact: NASA simulation shows we are sitting ducks

Even with six months' notice, we can't stop an incoming asteroid.

Credit: NASA/JPL
  • At an international space conference, attendees took part in an exercise that imagined an asteroid crashing into Earth.
  • With the object first spotted six months before impact, attendees concluded that there was insufficient time for a meaningful response.
  • There are an estimated 25,000 near-Earth objects potentially threatening our planet.
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New galaxy clusters found hiding in plain sight

The research suggests that roughly 1 percent of galaxy clusters look atypical and can be easily misidentified.

NASA/ESA/Hubble Heritage Team
MIT astronomers have discovered new and unusual galactic neighborhoods that previous studies overlooked.
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Hidden dwarf galaxies revealed in first images of the "cosmic web"

Not only does this give us a look at the scaffolding of the universe, we found some new galaxies too!

© Jeremy Blaizot / projet SPHINX
  • An international team of scientists has taken the first image of the web like structure that shapes the cosmos.
  • The images are the first direct look at the largest known objects in the universe.
  • The images also suggest far more dwarf galaxies exist than previously thought, provoking questions about how they form.
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Discovery of two giant radio galaxies hints at more to come

The newly discovered galaxies are 62 times bigger than the Milky Way.

I. Heywood, University of Oxford / Rhodes University / South African Radio Astronomy Observatory / CC BY 4.0.
  • Two recently discovered radio galaxies are among the largest objects in the cosmos.
  • The discovery implies that radio galaxies are more common than previously thought.
  • The discovery was made while creating a radio map of the sky with a small part of a new radio array.
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Astronomers have detected the first radio emissions from an exoplanet

Planets can emit radio waves. For the first time, we've picked them up from outside the solar system.

By ESO/L. Calçada - CC BY 4.0
  • An international team of scientists have picked up the first radio waves emitted by an exoplanet.
  • The planet is a "Hot Jupiter" orbiting a star system 40 light years from Earth.
  • The findings must be confirmed, but if they are, it will be a first in radio astronomy.
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