Category Archives: astronomy

Heavy Metals in the Cosmos

The recent discovery of gravitational waves from the neutron star merger designated GW170817 is said to prove that heavy metals like gold are produced in this extreme environment and not in supernovae, as was long thought. The teams that discovered … Continue reading

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LIGO Discovers Colliding Neutron Stars and Cosmic Gold

(Virgo doesn’t, but that’s still a good thing.) The two LIGO observatories and Virgo are the world’s three operational gravitational wave observatories. These observatories use incredibly precise lasers to detect the ripples in spacetime caused by colliding massive objects like … Continue reading

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There’s a Solar Eclipse Tomorrow!

In case you’ve been living under a rock, there is a total eclipse of the Sun tomorrow, and it’s going to cross the entire continental United States! A solar eclipse is a once in a lifetime event. Any given location … Continue reading

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Days 3 and 4 at the #AAS230: Galaxies, Supernovae, and Space Weather

The famous Crab Nebula supernova remnant. The AAS Conference has concluded, but there’s still a lot of exciting science going on. Here are the big stories from the final day and a half. Sadly, I missed the first talk on … Continue reading

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Day 2 at the #AAS230: Warm Jupiters, Human Spaceflight, and Other Stories

Artist’s rendition of the mysterious Planet Nine. The second day of the AAS Conference has concluded with still more fascinating tales from the world of astronomy. We begin with the tale of the Rosetta mission to Comet 67P/Churyumov-Gerasimenko, which concluded … Continue reading

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Day 1 at the #AAS230: Dark Matter, Colliding Planets, and More

The famous Bullet Cluster, the first clear proof of dark matter. The AAS Conference is underway today with the first round of talks from all branches of astronomy. For us astronomers, the biggest events are probably the plenary sessions, where … Continue reading

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