Multi-messenger Astronomy

Oumuamua

ASTEROIDS

Oumuamua, October 19, 2017

When researchers first spotted 'Oumuamua, it did not appear to have the characteristic tail or coma (cloud of ice and dust) that define comets, and was thought to be an asteroid. But that didn't fully explain the object's movements. Now scientists think it may be a comet after all, with valuable information about distant planetary systems. Oumuamua comes from a different star system. Its path across the sky confirms it does not originate in our solar neighbourhood.

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ligoSXS

Gravitational Waves

Two Black Holes Merge into One, April 2, 2014

The collision of two black holes holes—a tremendously powerful event detected for the first time ever by the Laser Interferometer Gravitational-Wave Observatory, or LIGO—is seen in this still from a computer simulation. LIGO detected gravitational waves, or ripples in space and time generated as the black holes spiraled in toward each other, collided, and merged. This simulation shows how the merger would appear to our eyes if we could somehow travel in a spaceship for a closer look. It was created by solving equations from Albert Einstein's general theory of relativity using the LIGO data.

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GWs GRBs Comets Planets Sun Black-hole Neutron's star BBH Galaxy Asteroid Earth Star Solar system Exoplanet


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