ISS Spacewalk and SpaceX's Second Starship Launch Attempt Highlighted in This Week's Spaceflight.

This week in spaceflight, a pair of cosmonauts are preparing for a spacewalk outside the ISS, while SpaceX is set to attempt its second Starship launch. Roscosmos is also planning an ISS spacewalk, and Singapore is sending an Earth-observing satellite to orbit. Additionally, NASA will discuss its blueprint to Mars at the Space Foundation’s Annual Space Symposium, and another Starlink launch is expected.