New stars form in regions where the density of gas and dust is relatively high. suppose you wanted to search for some recently formed stars. would you more likely be successful if you observed at visible wavelengths or at infrared wavelengths? why?

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.