To calculate the relative amount of gravitational pull that Jupiter and Saturn exert on the Earth relative to the…
Select :
AsteroidsBlack HolesCareers in AstronomyCelestial EventsCometsConstellationsCosmic DistancesCosmic Microwave BackgroundCosmologyExoplanetsGalaxiesGravity WavesHoaxesMoonPhysicsPlanetsRadio AstronomyScientific MethodSETISolar SystemSpace ProbesStarsSunTelescopesUnexplained Celestial Observations


How Much Power is Generated by the Aurora Borealis?
The solar-induced magnetic storms that produce the Northern (Southern) Lights, or Aurora Borealis (Australis), are generated when electrons from…

Could there be an Earth Twin on the Other Side of the Solar System Sharing Earth’s Orbit?
In fact, no. At least if we are talking about another planet, call it an “invisible twin”, on the…

Is it Possible for a Binary Planet System to Sustain an Orbit Around a Single Star?
Yes, though the formation process for such a system is rather difficult to construct, making such binary planet systems…

How Does the Path that the Moon Takes on the Sky Differ from that of the Sun?
There is a very nice description of the comparison of the Sun’s and Moon’s paths through the sky from…

Motion and Phases of the Moon
What you observed was probably the natural position of the Moon at this point in its regular path through…