A message to Ukraine? Cosmonauts wear yellow-and-blue flight suits for trip to space station

The fashion choices of three cosmonauts who just arrived at the International Space Station are raising some eyebrows.

A Russian Soyuz spacecraft carrying Oleg Artemyev, Denis Matveev and Sergey Korsakov docked with the orbiting lab’s new Prichal module today (March 18) at 3:12 p.m. EDT (1912 GMT). About 2.5 hours later, the hatches between the two vehicles opened, and the three newcomers floated aboard the station to greet their seven crewmates.

Everything went according to plan, but the hatch opening was still surprising, because it revealed that Artemyev, Matveev and Korsakov were wearing bright yellow flight suits with blue highlights — the colors of Ukraine. 

Related: Building the International Space Station (photos)

Artemyev, the Soyuz commander, was asked about the colors during a hatch-opening ceremony webcast by Russia’s federal space agency Roscosmos. He responded (in Russian) that there was a surplus of yellow fabric in the warehouse, according to space exploration enthusiast Katya Pavlushchenko, who posted a Twitter thread about the exchange.

Not everybody’s buying this answer, however. Some folks with knowledge of spaceflight procedures seem to think it could be a show of support for Ukraine, which Russia invaded on Feb. 24.

“Three Russian cosmonauts who just docked with the ISS arrive in Ukrainian yellow!” former NASA astronaut Scott Kelly, who flew a yearlong mission on the space station with cosmonaut Mikhail Kornienko from March 2015 to March 2016, tweeted today, in both Russian and English.

“Wow. Just wow. Well done. За экипаж!” tweeted Terry Virts, another former NASA astronaut. He spent six months aboard the station from November 2014 to June 2015 and traveled to and from the orbiting lab in a Soyuz. (“экипаж” is Russian for “crew,” according to Google Translate.)

There are other possible explanations for the flight suits as well. For example, multiple people on Twitter have pointed out that the colors are close to those of Bauman Moscow State Technical University, which Artemyev, Matveev and Korsakov all attended.

This is all just speculation; all we have to go on at the moment is Artemyev’s cryptic response during the hatch-opening ceremony. Hopefully one of the cosmonauts will offer some more details in the not-too-distant future.

None of the three newly arrived cosmonauts hails from Ukraine, by the way. Artemyev was born in present-day Latvia, Matveev is from St. Petersburg and Korsakov was born in what is now Kyrgyzstan.

Mike Wall is the author of “Out There” (Grand Central Publishing, 2018; illustrated by Karl Tate), a book about the search for alien life. Follow him on Twitter @michaeldwall. Follow us on Twitter @Spacedotcom or on Facebook.