30 Rare Photos That Reveal The Unseen Side Of Things

The Boeing 787 is known as the 'Dreamliner' and its variants seat 242 to 335 passengers. The 787 was designed to be 20% more fuel-efficient than the Boeing 767, which it was intended to replace.

While Boeing isn't having a great time right now, with grave safety concerns over it's new 737 max 8, the dreamliner has been a commercial success. Still, it wasn't all plain sailing; the aircraft suffered from several in-service problems related to its lithium-ion batteries, including fires on board during commercial service. This resulted in the FAA grounding all 787s in the US in 2013, with other civil aviation authorities following suit. The battery design was revised, and the Dreamliner was back in the skies within a few weeks.

Elephant's tails have a few uses. For example elephants can use their tails to communicate with each other; much like a dog, a swishing or wagging tail can signify happiness or excitement.

Baby elephants sometimes hold on to the tail of older animals while they are walking, for guidance and security on long walks. The tail full of hair also works as a flyswatter, to help keep away those annoying and biting flies.

Before engines and earth-moving equipment were invented, mining salt was one of the most expensive and dangerous things to do.

While salt is now plentiful, until the Industrial Revolution it was difficult to come by, and salt mining was often done by slave or prison labor and life expectancy among those sentenced was low.

In Roman times, salt on the table was a mark of wealth; so valuable was this resource that soldier's pay was originally in salt. This is where the word 'salary' comes from. 

Here are some interesting facts about spacesuits, according to NASA:

1. A spacesuit weighs approximately 280 pounds on the ground - without the astronaut in it. In the microgravity environment of space, a spacesuit weighs nothing.

2. Putting on a spacesuit takes 45 minutes, including the time it takes to put on the special undergarments that help keep astronauts cool. After putting on the spacesuit, to adapt to the lower pressure maintained in the suit, the astronaut must spend a little more than an hour breathing pure oxygen before going outside the pressurized module.

3. The reason that spacesuits are white is because white reflects heat in space the same as it does here on Earth. Temperatures in direct sunlight in space can be more than 275 degrees Fahrenheit.

4. No difference exists in a male's or female's suit, though the female astronaut usually requires a smaller size.

5. The shuttle spacesuit was designed to be made of many interchangeable parts, to accommodate the large number of astronauts with widely varying body sizes. These parts (upper and lower torsos, arms, etc.) are made in different sizes.

6. The body measurements of each shuttle astronaut are taken and recorded. Then the measurements are plotted against the size ranges available for each spacesuit component. The suit components are then assembled. Training suits are usually assembled nine months prior to flight, and flight suits are usually assembled four months prior to flight.

This photo was uploaded onto the Astronomy Picture of the Day and shows the shadow of the Moon darkening part of the Earth. It was taken by crew on the former Mir space station and it is estimated that the shadow moved across the Earth at nearly 2000 kilometers per hour.

"Only observers near the center of the dark circle see a total solar eclipse - others see a partial eclipse where only part of the Sun appears blocked by the Moon," APOD explained. "This spectacular picture of the 1999 August 11 solar eclipse was one of the last ever taken from the Mir space station. The two bright spots that appear on the upper left are possibly Jupiter and Saturn, although this has yet to be proven. Mir was deorbited in a controlled re-entry in 2001."

In Baby Driver, the red Subaru WRX becomes the star of the show as it weaves in and out of lanes, fits through imperceptible gaps between bumper-to-bumper traffic, jumps barriers, and skids around obstacles like a lucky drunk on ice. Edgar Wright, the writer and director of the movie, brought together a team of experts to coordinate incredibly complicated chases that he was determined to shoot on location in Atlanta. He estimates that 95 percent of the movie was shot in-camera, with CGI utilized for just a few touch-ups and quick shots.

According to its owner, it was a wild, not potted cactus, and the spines are 2-4" long. They also say that those spines were so sharp, they stabbed them even when they used oven mitts to repot the plant!

Sperm whales are the largest among the toothed whales, and have heads that are one-third the animal's length. These big headed whales have 20-26 pairs of cone-shaped teeth along their lower jaw, but interestingly enough none on the top. While this may seem bizarre for eating, it is strange that sperm whales have teeth at all. Their primary food item is the giant squid, which they don't chew but slurp up.

This macro photograph shows the individual seeds on the skin of a strawberry. Strawberry "seeds" are the ovaries of the berry that hold the actual seeds inside. The photographer, Alexey Kljatov, wrote on Flickr that the photo was created by :“Focus stacking + averaging (10 groups with different focus, each group contains 8 identical shots for averaging). The problem with this shot was that strawberry is too glossy (I put white plastic bag around berry to diffuse daylight).”

These prints lie in The Bull Canyon Dinosaur Track Trail. It's a short trail with a great viewpoint of Fisher Valley. The tracks are of a Therapod, likely something similar to a Velociraptor made famous in the Jurassic Park movies. The prints are left in Entrada Sandstone and about 200 million years old. On site, they look as if the dinosaur ran off the edge of the existing cliff, which is 1,000 feet above the valley floor.