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641-Backyard Astronomy
In March and April every year amateur astronomers, around the world, in Messier Marathons, attempt to view all of 110 objects in the Messier catalog…
4 years, 9 months ago
129E-141-Sailing The Cosmos
The first human use of the wind to power boats most likely occurred in about 3,000 BC. This was a major improvement in travel over walking and anima…
4 years, 10 months ago
640-Rocks or Rockets
Asteroid hunters have discovered a curious object. It appears likely to be either a rock ejected from the Moon or a piece of space junk from a huma…
4 years, 10 months ago
128E-140-A Weird Orbit
The vast majority of asteroids orbiting the Sun do so on a path that is pretty much
in the same plane as the planets. There is a lot of empty space …
4 years, 10 months ago
639-Earth Approachers
During a recent 60 day period asteroid hunters discovered 29 space rocks as they passed closer to us than the Moon. These small asteroids averaged 3…
4 years, 10 months ago
127E-139-Next Step to Mars
A trip to our Moon is one of the great human adventures of all time. However,
such a voyage is but a small step of about 30 Earth diameters into the …
4 years, 10 months ago
638-Methane
How ET could know there is life on Earth.
4 years, 10 months ago
126E-138-An Inter-Planetary Visitor
Recently an inter-planetary visitor made a close approach to planet Earth. It is about the same size as the object which entered our atmosphere in F…
4 years, 10 months ago
637-Martian Dust
After sunset in the spring and before sunrise in the fall, at a natural night sky location like the Cosmic Campground International Dark Sky Sanctuar…
4 years, 10 months ago
125E-137-Bad Seeing
Looking at the Universe from the Earth's surface is a bit like a scuba diver viewing our world from the bottom of a swimming pool. Don't get me wron…
4 years, 11 months ago