Russian cosmonauts discovered cracks on the Zarya module of the International Space Station (ISS) and are concerned that the fissures could spread over time, a senior space official reported on Monday. "Superficial fissures have been found in some places on the Zarya module," Vladimir Solovyov, chief engineer of rocket and space corporation Energia, told RIA news agency, according to Reuters. "This is bad and suggests that the fissures will begin to spread over time." The Zarya module, also called the Functional Cargo Block, was the first component of the ISS ever launched, having blasted into orbit on Nov. 20, 1998, according to NASA. Solovyov recently stated that the ISS is beginning to show its age and warned that there could potentially be an "avalanche" of broken equipment after 2025, according to Reuters.