NASA and the aerospace company Orbital ATK fired up its Space Launch System’s booster for its second and final test on 6/28/16 at Orbital ATK Propulsion Systems test facilities in Promontory, Utah. A pair of boosters such as this will provide 75 percent of thrust needed to escape the gravitational pull of the Earth, in NASA’s planned Journey to Mars. (NASA/Bill Ingalls)

NASA and the aerospace company Orbital ATK fired up its Space Launch System’s booster for its second and final test on 6/28/16 at Orbital ATK Propulsion Systems test facilities in Promontory, Utah. A pair of boosters such as this will provide 75 percent of thrust needed to escape the gravitational pull of the Earth, in NASA’s planned Journey to Mars. (NASA/Bill Ingalls)

On 6/20/16 a team of Caltech-led researchers have discovered the youngest fully-formed exoplanet ever detected. The planet, K2-33b, at 5 to 10 million years old, is still in its infancy. Here is an artist’s conception of the newborn planet (dark spot) transiting its sun. (NASA/JPL-Caltech/R. Hurt)

On 6/20/16 a team of Caltech-led researchers have discovered the youngest fully-formed exoplanet ever detected. The planet, K2-33b, at 5 to 10 million years old, is still in its infancy. Here is an artist’s conception of the newborn planet (dark spot) transiting its sun. (NASA/JPL-Caltech/R. Hurt)

A Siberian tiger cools itself in the pool of the tigers' enclosure in the Gyongyos Zoo in Gyongyos, Hungary on 6/24/16 when daytime high temperatures reached between 32-36° C. (AP)

A Siberian tiger cools itself in the pool of the tigers’ enclosure in the Gyongyos Zoo in Gyongyos, Hungary on 6/24/16 when daytime high temperatures reached between 32-36° C. (AP)

On 6/28/16, NASA released this Hubble Space telescope image of the dwarf galaxy Kiso 5639. The small galaxy some 82 million light-years away resembles a skyrocket, with a brilliant blazing head and a long, star-studded tail. (NASA/ESA)

On 6/28/16, NASA released this Hubble Space telescope image of the dwarf galaxy Kiso 5639. The small galaxy some 82 million light-years away resembles a skyrocket, with a brilliant blazing head and a long, star-studded tail. (NASA/ESA)

A Soyuz TMA-19M spacecraft carrying the returning NASA astronaut Tim Kopra, ESA astronaut Tim Peake, and commander Yuri Malenchenko lands in the steppe of Kazakhstan on 6/18/16. The trio spent 186 days on the International Space Station. (NASA/Bill Ingalls)

A Soyuz TMA-19M spacecraft carrying the returning NASA astronaut Tim Kopra, ESA astronaut Tim Peake, and commander Yuri Malenchenko lands in the steppe of Kazakhstan on 6/18/16. The trio spent 186 days on the International Space Station. (NASA/Bill Ingalls)

A halo around the sun is seen over the California State Capitol, in Sacramento, on 6/14/16. The phenomenon is known as a sun halo. Tom Dang, a meteorologist with the National Weather Service says it is caused by sunlight passing through ice crystals in cirrus clouds within the Earth's atmosphere. (AP)

A halo around the sun is seen over the California State Capitol, in Sacramento, on 6/14/16. The phenomenon is known as a sun halo. Tom Dang, a meteorologist with the National Weather Service says it is caused by sunlight passing through ice crystals in cirrus clouds within the Earth’s atmosphere. (AP)

As it prepares for its 7/4/16 arrival at Jupiter, NASA's Juno spacecraft captured this color view on 6/21/16 from a distance of 10.9 million kilometers from the giant planet. Seen in this image with Jupiter are its four largest moons Io, Europa, Ganymede and Callisto. (NASA/JPL-Caltech/SwRI/MSSS)

As it prepares for its 7/4/16 arrival at Jupiter, NASA’s Juno spacecraft captured this color view on 6/21/16 from a distance of 10.9 million kilometers from the giant planet. Seen in this image with Jupiter are its four largest moons Io, Europa, Ganymede and Callisto. (NASA/JPL-Caltech/SwRI/MSSS)

This is a close-up of the head of a sculpture called "Cyber Horse" that was on display at the entrance to the annual Cyberweek conference at Tel Aviv University, Israel on June 20, 2016. “Cyber Horse” was made from thousands of infected computer and cell phone bits. (Reuters)

This is a close-up of the head of a sculpture called “Cyber Horse” that was on display at the entrance to the annual Cyberweek conference at Tel Aviv University, Israel on June 20, 2016. “Cyber Horse” was made from thousands of infected computer and cell phone bits. (Reuters)

China’s new Long March 7 rocket lifts off from the launch pad in Wenchang, Hainan province, China on 6/25/16. (Reuters)

China’s new Long March 7 rocket lifts off from the launch pad in Wenchang, Hainan province, China on 6/25/16. (Reuters)

Artist impression of distant galaxy SXDF-NB1006-2. Astronomers on 6/15/16 announced that they detected the universe’s oldest oxygen (green) in this galaxy. To make their discovery, the astronomers used the Atacama Large Millimeter/submillimeter Array (ALMA) radio telescope array, in Chile. Ionized hydrogen (purple) was detected by the Subaru Telescope in Hawaii (NAOJ)

Artist impression of distant galaxy SXDF-NB1006-2. Astronomers on 6/15/16 announced that they detected the universe’s oldest oxygen (green) in this galaxy. To make their discovery, the astronomers used the Atacama Large Millimeter/submillimeter Array (ALMA) radio telescope array, in Chile. Ionized hydrogen (purple) was detected by the Subaru Telescope in Hawaii (NAOJ)