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871-New Mars Trojan
The Lagrange point L4 is 60° ahead of Mars whereas L5 is 60° behind Mars on the red planet’s orbital path about the Sun. An object placed at either of these locations is trapped gravitationally and i…
Published on 2 months, 1 week ago
358E-389-Tiny Spacecraft
To reach the vicinity of the nearest star, 24 trillion miles away, in less than 20 years, an interstellar space probe would have to travel at a substantial fraction of the speed of light. Newton's la…
Published on 2 months, 1 week ago
870-Satellite Ashes
50 years ago scientists found that Chlorofluorocarbons or CFC chemicals in widespread use in refrigeration, air conditioning , and hair spray were beginning to damage the ozone layer in the Earth’s s…
Published on 2 months, 2 weeks ago
357E-388-40 years
Looking at the stars on a clear dark night, far from the artificial air glow humanity creates, have you ever wondered what it would be like to travel in truly deep interstellar space? 40 years after …
Published on 2 months, 2 weeks ago
869-Taurid Resonant Swarm
The planets, millions of asteroids, tens of thousands of comets, distant icy worlds, and countless other bits and pieces of material orbit the Sun. A group of such co-orbiting objects is called the T…
Published on 2 months, 3 weeks ago
356E-386-Interplanetary Sand Traps
When the Japanese spacecraft Hayabusa [Hi ya Boo sa] visited the near Earth asteroid Itokawa in 2005 it found this 2000 foot by 800 foot elliptical world to have a variety of surface features. Instea…
Published on 2 months, 3 weeks ago
868-Inside Venus
Astronomers have discovered some 1.4 million asteroids. Approximately 35,000 of these space rocks come near Earth. Less than 40 of them are classified as being Atira asteroids whose orbits lie enti…
Published on 3 months ago
355E-383-Moon Water
The lunar roving, battery powered, 4 wheel drive "Moon Buggy" allowed astronauts on Apollo 15, 16, and 17 to travel 8 mph on the lunar surface with a maximum range of approximately 4.7 mi. Some of th…
Published on 3 months ago
867-Daytime Fireball
Dr. Bill Cooke of NASA’s Meteoroid Environment Office reports that on June 26, 2025 shortly after noon a beachball sized meteoroid traveling at approximately 30,000 miles per hour broke up about 27 m…
Published on 3 months, 1 week ago
354E-382-Martian Debris
Martian Trojan asteroids have stable orbits around the Sun, leading and trailing the red planet by 60 degrees, where the Sun's and Mars's gravity are balanced. For some time astronomers have consider…
Published on 3 months, 1 week ago