A man attending Gamescom 2014, Europe’s largest video games trade show, is shown here trying on Sony’s “Project Morpheus” virtual reality headset. Gamescom 2014 runs through Sunday, August 17, 2014 in Cologne, Germany. (Reuters)

A man attending Gamescom 2014, Europe’s largest video games trade show,  tries on Sony’s “Project Morpheus” virtual reality headset. Gamescom 2014 runs through Sunday, August 17, 2014 in Cologne, Germany. (Reuters)

Soaring above the southwest coast of Africa the Orbital Sciences Cygnus resupply cargo vehicle is shown here being released from the robotic arm on the International Space Station on August 15, 2014. (AP)

Soaring above the southwest coast of Africa, the Orbital Sciences Cygnus resupply cargo vehicle is released from the robotic arm on the International Space Station on August 15, 2014. (AP)

Protein samples that were taken from tobacco plants are being prepared in the laboratory of Icon Genetics on August 14, 2014. The samples are being used in the German company’s current efforts to develop an Ebola vaccine. (Reuters)

Protein samples that were taken from tobacco plants are prepared in the laboratory of Icon Genetics on August 14, 2014. The samples are being used in the German company’s current efforts to develop an Ebola vaccine. (Reuters)

Gathering in a Madrid park, people enjoy the spectacular sight of a perigee moon, also known as a supermoon, as it rises above them on Sunday, Aug. 10, 2014. A supermoon takes place when the moon is near the horizon and appears larger and brighter than other full moons. (AP)

Gathering in a Madrid park, people enjoy the spectacular sight of a perigee moon, also known as a supermoon, as it rises above them on Sunday, Aug. 10, 2014. A supermoon takes place when the moon is near the horizon and appears larger and brighter than other full moons. (AP)

A female Sri Lankan baby leopard, born July 1, 2014 in a zoo located in Maubeuge, France was shown to the public on August 12, 2014. The International Union for Conservation of Nature currently has the Sri Lankan leopard listed as an endangered animal species. (Reuters)

This female Sri Lankan baby leopard, born July 1, 2014 in a zoo located in Maubeuge, France was shown to the public on August 12, 2014. The International Union for Conservation of Nature currently has the Sri Lankan leopard listed as an endangered animal species. (Reuters)

People throughout the world were recently treated to a show in the night skies during the annual Perseid meteor shower. Here, in this long exposure photo taken on August 13, 2014, a meteor (center) falls through the atmosphere above the village of Blace, Macedonia (AP)

People throughout the world (mostly in the northern hemisphere) were recently treated to a show in the night skies during the annual Perseid meteor shower. Here, in this long exposure photo taken on August 13, 2014, a meteor (center) falls through the atmosphere above the village of Blace, Macedonia (AP)

Here’s another view of a Perseid meteor as it streaks through the Earth's atmosphere. This photo was taken by astronaut Ron Garan while aboard the International Space Station on August 13, 2011. (NASA)

Here’s another view of a Perseid meteor (center) as it streaks through the Earth’s atmosphere. This photo was taken by astronaut Ron Garan while aboard the International Space Station on August 13, 2011. (NASA)

No they’re not astronauts or visitors from an alien planet but instead are actually doctors working in a Biosafety Level III laboratory at Peru’s National Institute of Health in Lima on August 12, 2014. While no cases of Ebola have been reported so far in Peru, officials there still want to be prepared and are fitting the laboratory with equipment to perform sophisticated molecular testing that helps diagnose Ebola. (Reuters)

No, they’re not astronauts or visitors from an alien planet, but instead are doctors working in a Biosafety Level III laboratory at Peru’s National Institute of Health in Lima on August 12, 2014. While no cases of Ebola have been reported so far in Peru, officials there still want to be prepared and are fitting the laboratory with equipment to perform sophisticated molecular testing that helps diagnose Ebola. (Reuters)

The European Space Agency’s ATV-5 spacecraft, loaded with a variety of supplies, is seen here approaching the International Space Station, on August 12, 2014. Launched from French Guiana on July 29, 2014 this was the last ATV spacecraft that ESA will send to resupply the space station. (© Roscomos/O.Artemyev)

The European Space Agency’s ATV-5 spacecraft, loaded with a variety of supplies, is seen here approaching the International Space Station, on August 12, 2014. Launched from French Guiana on July 29, 2014 this was the last ATV spacecraft that ESA will send to resupply the space station. (© Roscomos/O.Artemyev)