An astronomer wants to observe at a particular wavelength using one of the telescopes listed. Arrange these telescopes from worst to best angular resolution based on the diffraction limit. Worst resolution to Best resolution.1. personal 8-inch telescope 2. Mayall 4-Meter Telescope at Kitt Peak National Observatory 3. 2.1-meter Otto Struve Telescope at McDonald Observatory 4. Nickel 1-meter telescope on Mt. Hamilton 5. 10.4-meter Gran Telescopio Canarias

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.

it's a b and