... a telescope) by the fact they move across the line of sight, leaving a streak rather ... a circle, which means that a pull of a few 1000 km this way or that can shift the ...
... a telescope) by the fact they move across the line of sight, leaving a streak rather ... a circle, which means that a pull of a few 1000 km this way or that can shift the ...
... A exerts a force F on object B, object B always exerts a force -F (same strength ... a flare dropped by a military airplane or fired from a ship, as part of some ... a result, when the wavelength spread of a spectral line is examined (and instruments ...