All posts by Bob Berman

More satellites than stars

More satellites than stars

Elon Musk’s SpaceX company, along with a few other companies, are planning to put 12,000 new satellites into low Earth orbit over the next few years. Unlike our existing communications satellites that are parked in geostationary orbits all the way up at 22,300 miles and are utterly invisible, these will definitely appear in the sky.

It wasn’t a black hole, and they can’t see the Great Wall

It wasn’t a black hole, and they can’t see the Great Wall

If you ask anyone the first words spoken from the Moon, they’ll invariably mention the “One small step” speech. Actually, the first lunar words were, “Okay, engine stop,” uttered by Buzz Aldrin. Less than a minute later, Armstrong said, “Houston, Tranquility Base here. The Eagle has landed!” This July 20, 1969 photo of the Apollo 11 Lunar Module interior shows Aldrin during the lunar landing mission.

What’s the (dark) matter?

What’s the (dark) matter?

If the dark matter is an entirely new form of material, unlike the baryonic matter that comprises our bodies and our planet, then we have been demoted
once again, big-time.