Crew-13 Mission: The ISS's Next Crew Rotation Seen from Earth

Every time a new crew rotation to the International Space Station is scheduled, the night sky readies itself for one of its most dynamic moments: the pre-docking orbital choreography and the handover of crews more than 400 kilometers above our heads. With preparations for the NASA and SpaceX Crew-13 commercial mission now underway, the routine aboard the orbital laboratory is beginning to shift, heralding weeks of intense activity that skywatchers on Earth can notice both in visible orbital traffic and in the station's own working schedules.

For anyone looking up at dusk, the ISS is not just an impersonal point of light, but a habitat continuously occupied for a quarter of a century. Understanding the phases that precede a new launch makes it much easier to interpret what is happening up there every time you see that silent star glide across the sky.

What happened

NASA has outlined the core objectives of the upcoming SpaceX Crew-13 mission, a regular flight under the Commercial Crew Program that will send four astronauts to the International Space Station aboard a Dragon capsule boosted by a Falcon 9 rocket. This team will take over critical tasks ranging from biomedical experiments and new technology demonstrations to exterior and interior maintenance of the orbital complex, according to the U.S. space agency.

This announcement comes amid a surge of operational activity in low Earth orbit. In parallel, NASA has released its findings and lessons learned following the pioneering attempt to raise the orbit of the Swift space observatory using a commercial servicing vehicle. Although the mission concluded without boosting the probe's altitude, the agency and its industry partner validated close-approach maneuvers and autonomous capture techniques that will be vital for future on-orbit satellite servicing.

At the same time, the infrastructure for space access continues to expand. As reported by specialized outlet Spaceflight Now, SpaceX is facing a new orbital flight window with its Starship-Super Heavy system from Starbase (Texas), aimed at deploying an initial batch of 26 Starlink Version 3 satellites. Both operations reflect how Earth's immediate orbital environment has become a bustling highway where the ISS remains the only hub supporting a permanent human presence.

Why it matters

Crew rotation missions like Crew-13 are often seen as routine procedures, but in reality they represent an extremely delicate logistical and human balancing act. Currently, the crew currently on board consists of seven people: Jessica Meir, Anna Kikina, Pyotr Dubrov, Jack Hathaway, Anil Menon, Andrei Fedyaev, and Sophie Adenot. When a new capsule docks, the complex's population experiences a temporary surge, with up to eleven professionals living together during the handover days, multiplying resource consumption, exercise shifts, and docking port occupancy.

The contrast between these operations and the lessons learned from the Swift mission reveals a technical reality that often goes unnoticed: maneuvering in orbit is extraordinarily difficult. Rendezvousing with an object at speeds exceeding 27,000 km/h, synchronizing motion vectors, and executing a physical capture without creating space debris requires millimeter precision. While SpaceX crewed flights to the ISS have standardized this process to the point of making it look automatic, the difficulties encountered with Swift serve as a reminder that every rendezvous remains a feat of modern engineering.

Furthermore, the increased launch cadence of megaconstellations and heavy-lift spacecraft, such as the Starship flight reported by Spaceflight Now, alters the night sky's optical and operational environment. For amateur astronomers and satellite trackers, the constant stream of cargo craft, satellite trains, and crewed capsules requires distinguishing between different objects in transit and appreciating the unique stability the orbital station represents compared to commercial fleets.

What to look for in the sky

Right now, according to data from our tracker, the International Space Station is orbiting at an altitude of 430 kilometers, traveling at 27,561 km/h. At these parameters, the spacecraft completes one orbit around the globe roughly every 92 minutes, meaning the current crew witnesses 16 sunrises and sunsets every Earth day while preparing the laboratories for the arrival of their relief crew.

To enjoy a sighting from solid ground, you do not need telescopes or specialized equipment; the ISS is the third-brightest object in the night sky after the Sun and the Moon, thanks to the vast reflective surface of its solar arrays. You can check in advance what time the ISS passes over your city to plan your viewing during optimal windows, which coincide with local sunrises and sunsets when the ground is in shadow but the station's hull is still bathed in direct sunlight.

During the days before and after the launch of a mission like Crew-13, the sky offers an added thrill: the orbital chase. Prior to docking, the Dragon capsule flies in a slightly lower trajectory to gain relative speed and catch up with the station. During favorable passes, you can spot two points of contrasting brightness with the naked eye—the fainter capsule chasing the brilliant beacon of the ISS—crossing the same celestial corridor just minutes apart. Watching that geometric progression from your terrace or backyard turns orbital mechanics into a tangible, captivating experience.

Before the new crew arrives, step outside tonight to watch those seven astronauts streak across your horizon, and use our real-time tracker to know exactly when to look up.