Space is a vast void filled with secrets. But, is there a smell in this void? What do astronauts say? Technically, since there is no atmosphere like on Earth, it’s not possible to smell in space. However, astronauts describe certain smells when they return to the spacecraft and take off their helmets. These smells are usually described as gunpowder, burnt metal, and burnt steak. Some even make more specific comparisons, describing it as burnt almond cookies.
Possible Sources of the Smell in Space
There are two main theories about the source of these smells. The first theory is that oxygen atoms clinging to astronauts’ suits create a smokeless burning reaction when they interact with other oxygen atoms upon returning to Earth’s atmosphere, resulting in a burnt smell. The second theory is that polycyclic aromatic hydrocarbons (PAHs), which emerge when stars explode in space and are also found in burnt foods, cause a similar burnt smell.
The Secrets of the Depths of Space
This intriguing and perhaps slightly frightening phenomenon makes us wonder what other secrets are hidden in the depths of space. The smell of space might just be the beginning of many more mysteries that space keeps from us. Future research could provide answers to these and many other questions. Space continues to unravel new mysteries for scientists and astronauts every day.
Source: Live Science