Question: Would it be possible to improve astronomical seeing on earth using a circular surrounding array of lasers pointing…
Select :
AsteroidsBlack HolesCareers in AstronomyCelestial EventsCometsConstellationsCosmic DistancesCosmic Microwave BackgroundCosmologyExoplanetsGalaxiesGravity WavesHoaxesMoonPhysicsPlanetsRadio AstronomyScientific MethodSETISolar SystemSpace ProbesStarsSunTelescopesUnexplained Celestial Observations
How Far Away Could We See An Alien Civilization Transmitting a Powerful Radio Signal in Our Direction?
Question: If the most powerful transmitter currently used on Earth was used by an alien civilization, what is the…
How Do You Measure the Mass of a Black Hole with Radio Waves?
Question: How can you measure the mass of a black hole with radio waves? What is the mass of…
Why Do You Need So Many Radio Telescopes?
Question: Why do you need so many radio telescopes? Do they all receive exactly the same frequency? How are…
Where Can I Find Fluxes for Strong Radio Galaxies?
Question: I am trying to calibrate New Horizons radiometry data and need flux of strong radio sources (Cas A,…
How Do You Distinguish Between People-Made Signals and Those From Space?
Question: You have loads of terrestrial interference, so how do you know the signals you receive are extra terrestrial?…