On Feb. 22, 1906, German astrophotographer Max Wolf helped reshape our understanding of the solar system. Again.

Born in 1863, Wolf had a habit of dramatically altering the astronomy landscape. Something of a prodigy, he discovered his first comet at only 21 years old. Then in 1890, he boldly declared that he planned to use wide-field photography in his quest to discover new asteroids, which would make him the first to do so. Two years later, Wolf had found 18 new asteroids. He later became the first person to use the "stereo comparator," a View-Master-like device that showed two photographs of the sky at once so that moving asteroids appeared to pop out from the starry background.

Does this image make you anxious or are you already tracking where all the wires go? If the latter, you might have what it takes to be an astronaut!

It is an exciting time for space. With NASA's latest rover safely on Mars and ESA's call for the next class of astronauts, the space industry is teeming with possibilities.

This image taken in ESA's Columbus laboratory on the International Space Station is a snapshot of the many opportunities in space research and exploration.

In the center is the Biolab facility, a fridge-sized unit that hosts biological experiments on micro-organisms, cells, tissue cultures, small plants and small invertebrates. Performing life science experiments in space identifies the role that weightlessness plays at all levels of an organism, from the effects on a single cell up to a complex organism—including humans.

The facility has enabled researchers to make some remarkable discoveries, most notably that mammalian immune cells required a mere 42 seconds to adapt to weightlessness, prompting more questions but also an overall positive outlook for long-duration human spaceflight.

The pink glow in the image is from the greenhouse that has enabled many studies on plant growth in space.