I have two tidally locked planets of roughly equal size (about the size of Mars) orbiting each other around a barycenter equidistant between them. They complete a day-night cycle every 72 Earth hours. Together, they revolve around a single star similar to our sun. One revolution is approximately one Earth year. Both planets have life on them. Is this arrangement possible?
Both have large liquid iron cores and magnetic fields, but the poles are oriented toward the east-west rather than north-south. That is, the "north" pole of one planet's magnetosphere always faces the south pole of the other, and at midday on either planet, one of the poles faces the sun. Is this possible, and would it expose an area of the planet to intense solar radiation?
If one is standing on planet A at midnight, looking up at planet B, will the eclipsed planet B appear red like a lunar eclipse on Earth?