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"spaceflight"

Pluto, Ready for Your Close-Up!

At just before 7:50 A.M. today, July 14, 2015, the New Horizons spacecraft made its closest approach to Pluto. After a 9.5-year, three-billion-mile voyage, the ship got within about 7,750 miles from the surface

July 14, 2015 — Steve Mirsky

Basic Rocket Science: Sub-Orbital Versus Orbital

As the private space company Blue Origin achieves a 100 kilometer suborbital flight, and a spectacular re-landing of its rocket, it's worth pausing to consider the basic energy requirements of spaceflight from the surface of the Earth.

November 25, 2015 — Caleb A. Scharf