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103E-115-Ballistic Capture
Spacecraft destined for Mars have so far used the Hohmann transfer to achieve an orbit about the red planet. This approach requires the launch from …
5 years, 7 months ago
614-Rare Atira
The Atira class of Earth approaching asteroids are ones whose orbit is entirely within that of the Earth's path about the Sun. Less than 3 dozen of t…
5 years, 7 months ago
102E-114-Roses First Asteroid
Rose Matheny's third solo night of asteroid hunting, using the University of Arizona Schmidt telescope, on Mt. Bigelow, was one of the longest of the…
5 years, 7 months ago
613-Climate Change and Telescopes
Recently, in the journal Nature Astronomy, a team of astronomers led by Dr. Faustine Cantalloube of the Max-Planck Institute for Astronomy released d…
5 years, 7 months ago
101E-113-A Dwarf Water Planet In Our Solar System
The dwarf planet Ceres may be a place in our solar system where life could have developed. At 590 miles in diameter it is the largest asteroid and o…
5 years, 7 months ago
612-Day and Night
Most life on Earth is synchronized to the regular cycles of day and night. Until about a hundred years ago, the natural night sky was familiar to all…
5 years, 7 months ago
100E-112-A Banner Year For Asteroid Hunters
The goal of the NASA Near Earth Object Program is to discover any objects on a collision course with planet Earth. We now know of more than 90% of o…
5 years, 7 months ago
99E-111-Green Meteors
Recently, my wife and I saw a beautiful, bright, green, meteor fireball streaking across the western New Mexico night sky. Such sightings by some UF…
5 years, 8 months ago
611-Aurora Mysteries
Auroral displays have been observed and reported on throughout human history. Data from NASA's 5 Themis (Themm us) satellites analyzed by powerful su…
5 years, 8 months ago
610-Atmospheric Gravity Waves
Atmospheric gravity waves can be powerful. In September of 2018 two glider pilots surfed an atmospheric gravity wave created by high speed polar wind…
5 years, 8 months ago