Ad Astra
Ed Kulis

A Cosmic Crisis

How a Dispute over a Single Number Became a Cosmological Crisis Two divergent measurements of how fast the universe is expanding cannot both be right.

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Cislunar
Ed Kulis

Elon Musk Starship and Super Heavy

Starship and Super Heavy are the biggest, most important pieces of Elon Musk’sgrand plan for SpaceX, his private spaceflight company. Musk has repeatedly stressed that

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Cislunar
Ed Kulis

Moon Industrial Complex

The Moon is gateway to space, and in the future it might serve as an industrial and mining complex fueling vast production of spaceships, rocket

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Cislunar
Ed Kulis

O’Neill Cylinders

A look at O’Neill Cylinders, immense space habitats. Visit our sponsor, Brilliant: https://brilliant.org/IsaacArthur/  Far larger than any conventional Space Station, O’Neill Cylinders could potentially serve

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Solar System
Ed Kulis

Solar Minimum is Coming

High up in the clear blue noontime sky, the sun appears to be much the same day-in, day-out, year after year. But astronomers have long

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Cislunar
Ed Kulis

Implementing the NSS Vision

Exciting News! Our Sacramento L5 Society has an article published in the National Space Society Magazine! Implementing the NSS Vision We, a consensus of the

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Moon
Ed Kulis

Fly Me to the Moon

Fly Me to the Moon: An Insider’s Guide to the New Science of Space Travel by Edward Belbruno    This is a great book that describes

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Orbital Mechanics
Ed Kulis

Oberth effect

In astronautics, a powered flyby, or Oberth maneuver, is a maneuver in which a spacecraft falls into a gravitational well, and then accelerates when its

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