Bessel's Star (61 Cygni) was the first star whose distance was calculated using the parallex method. The star is known to make an angle of 570 milliarcseconds between two opposite
points of the Earth's orbit. Using this information, calculate the distance to the star.

As seen in a us weather map, the h (or high) and l (or low) symbols indicate regions where surface air pressures are high or low, respectively, compared to surrounding areas. an h is plotted where the air pressure is highest and an l is plotted where the air pressure is lowest. proceeding outward and away from the center of a high pressure system, the air pressure "