Space botanist conducts plant experiments in orbit | Space photo of the day for Oct. 21, 2026

NASA astronaut Luke Delaney conducts botany experiments aboard the International Space Station (ISS). This is one of many such investigations taking place on the orbiting laboratory. The photo, taken by fellow astronaut Jessica Watkins, commander of SpaceX's Crew-13 mission, shows Delaney working with petri dishes and experiment modules.

These support research into how plants grow in the unique microgravity conditions of space. Delaney's experiments focus specifically on the genetic responses of plants in this environment. This work builds on extensive prior research on plants grown in space, including growing edible produce like peppers, and even proving moss can survive outside the station.

While the ISS exterior may appear sterile with its white and gray technology, it is actually a thriving environment for biological research. In addition to studying plants, astronauts conduct investigations on animals, microorganisms, and research benefiting human health. Through these space-based studies, we gain insights into our own planet, monitoring its changing landscapes, wildlife, glaciers and natural disasters.