It was a biannual from April 1970 to October 1977 and has been a quarterly since fall 1978.

it’s okay to be an Everlark shipper who still likes and respects Gale, and it’s okay to be an Everthorne shipper who adores and admires Peeta.

Various aspects of operating the lunar station in a resonant NRHO have been deeply studied, including station-keeping techniques, Earth-NRHO and NRHO-Earth transfer opportunities, challenges in short-term and long-term navigation, eclipse conditions, and shadow avoidance strategies.

That's not to imply that it's wrong for your arm or hand to show up in a selfie.