Looking skyward

This long-exposure photograph taken on April 28 shows the Milky Way in the clear night sky at Ngwe Saung beach, west of Pathein in Myanmar's Irrawaddy region. (Ye Aung Thu/AFP/Getty Images)

A commercial jetliner begins its final approach to O'Hare International Airport as Mammatus clouds form over Wrigley Field during the fifth inning of a baseball game between the Chicago Cubs and the Los Angeles Dodgers, June 22, in Chicago. (Charles Rex Arbogast/Associated Press)

The sky turns orange as the clouds part from a storm above Sparks Marina Park as the sun sets, July 10, in Sparks, Nev. (Larry Steagall/Kitsap Sun via AP)

The moon rises as people sit on rides at the State Fair Meadowlands, July 1, in East Rutherford, N.J. (Julio Cortez/Associated Press)

"Sky Mirror," a 2006 stainless steel monumental artwork by British contemporary artist of Indian origin Anish Kapoor, is displayed in the gardens of the Chateau de Versailles, in Versailles on June 5, as part of "Kapoor Versailles", an exhibition of Kapoor's work that runs through November 1, 2015. (STEPHANE DE SAKUTIN/AFP/Getty Images)

The storm clouds in the area provided a colorful backdrop as the Red Sox hosted the Baltimore Orioles in a regular season MLB baseball game at Fenway Park in Boston on June 23. (Jim Davis/Globe Staff)

Lightning brightens the night sky over Washington, DC, during a rainstorm on April 20. (MLADEN ANTONOV//AFP/Getty Images)

Power supply lines, contrails and clouds paint a graphic design in the sky over Ebersbach, southern Germany, on April 14. (KARL-JOSEF HILDENBRAND/AFP/Getty Images)

A huge ash cloud is seen after an explosion at Colima Volcano, western Mexico, on July 11. (Ulises Ruiz Basurto/EPA)

The Aurora Borealis, also known as the Northern Lights, begin to flare up with green, yellow and pink hues near the Vedauwoo Recreation Area on June 23 between Cheyenne and Laramie, Wyo. The Northern Lights are created as a result of collisions between gaseous particles in the Earth's atmosphere and charged particles released by the sun, according to the Northern Lights Space and Science Centre in Canada. Variations in color are due to the type of gas particles that are colliding. (Blaine McCartney/Wyoming Tribune Eagle via AP)

Alitalia plane flies in front of a colorful rainbow, in Pavia, near Milan, Italy, May 21. (Antonio Calanni/Associated Press)

The Milky Way shines in the sky over El Roque beach in Fuerteventura, Canary Islands, Spain, May 18. The night sky of Fuerteventura has become the third Starlight reserve of the Canary Islands. (CARLOS DE SAA/EPA)

The art installation 'Alley of Flying Umbrellas' in central St. Petersburg, Russia was inspired by 'Umbrella Sky Project' of the Portuguese town of Agueda and was made of 500 colored umbrellas. (ANATOLY MALTSEV/EPA)

People hang from the Sky Flyer ride at the State Fair Meadowlands during a Fourth of July fireworks display, July 3 in East Rutherford, N.J. (Julio Cortez/Associated Press)

Lightning strikes during a thunderstorm on July 7 in Las Vegas, Nevada. The monsoon storm dropped heavy rain and hail in parts of the valley causing street flooding and power outages. (Ethan Miller/Getty Images)

Clouds are reflected in the Midi Tower, the headquarters of the National Pensions Office, in downtown Brussels in Belgium, June 21. (Charles Platiau/Reuters)

A thunderstorm is seen northwest of the Las Vegas Strip on July 6 in Las Vegas, Nevada. (Ethan Miller/Getty Images)

Climate change advocate Yeb Sano is seen silhouetted against the sky in Manila. (NOEL CELIS/AFP/Getty Images)

A man takes photos of the solar halo in Mexico City, May 21. According to meteorologists, the weather phenomenon creates rainbows around the sun and is formed by the reflection of ice crystals. (EDGARD GARRIDO/Reuters)

An aircraft flies in front of the bright full moon shining against the dark sky in Teglas, Hungary, June 3. (ZSOLT CZEGLEDI/EPA)

A strong lightning lights up the night sky during a thunderstorm above a residential area in Sieversdorf Brandenburg, Germany, July 7. After the hot summer days heavy thunderstorms are often experienced over Brandenburg at night. (PATRICK PLEUL/EPA)

A rainbow is seen in the sky behind LGBT pride flags and the U.S. flag in West Hollywood, Calif. June 26. The U.S. Supreme Court ruled that the U.S. Constitution provides same-sex couples the right to marry. (Lucy Nicholson/Reuters)

A member of the Samaritan community is silhouetted against the sky as they pray atop Mount Gerizim at sunrise, above the city of Nablus, West Bank, June 28, as they celebrate the Shavuot festival. (ALAA BADARNEH/EPA)

The sky looks ominous after days of heavy rain on May 25 in Austin, Texas. (Drew Anthony Smith/Getty Images)

A bird flies in front of city sky scrapers covered by fog in the center of Warsaw, Poland. (Kacper Pempe/Reuters)

Mass lightning bolts light up night skies by the Daggett airport from monsoon storms passing over the high deserts, north of Barstow, Calif., July 1. (GENE BLEVINS/Reuters)

A street performer dressed as a leprechaun is silhouetted against the sky as he leaps into the air during his performance along "Rock Street" on the final day of the Rock in Rio USA concert in Las Vegas, Nevada, May 16. (L.E. BASKOW/Reuters)

Lightning brightens the sky over a pagoda in Yangzhou, east China's Jiangsu province. (AFP/Getty Images)

A kite is silhouetted against the sun as Balinese fly their traditional kites during the Bali Kite Festival in Sanur, Bali, Indonesia, July 3. The major colors of the Balinese kites are black, red, white, and gold/yellow which represent the incarnations of the Hindu deities. The festival was organized to promote tourism in Bali. (MADE NAGI/EPA)

A girl stands with a background of dark monsoon rainclouds looming in the sky before heavy rains in Calcutta, India, on April 28. The summer monsoon season in India usually begins in the months of June and July and lasts until October. (PIYAL ADHIKARY/EPA)

The fireworks explode over the Charles River and Esplanade in Boston on July 4. (Matthew J. Lee/Globe Staff)

A Malaysian Islamic religious officer looks at a telescope to determine the sighting of the new moon to mark the start of the fasting month of Ramadan in Putrajaya, outside Kuala Lumpur, Malaysia, June 16. (FAZRY ISMAIL)

A bicyclist glides past a background scene of puffy clouds and blue sky reflected in silky smooth Columbia River waters in Portland, Ore. (Don Ryan/Associated Press)

People flying sky lanterns into the sky to celebrate the Dai minority group new year in Xishuangbanna, southwest China's Yunnan province on April 13. (AFP/Getty Images)

A blowball grows to the sky at a farmers field in Duisburg, Germany, May 13. (Frank Augstein/Associated Press)

A tornado builds and travels southwest causing damage near Dean Rd. and 82nd Avenue in Hutchinson, Kan., July 13. (Sandra J. Milburn/The Hutchinson News via A)

The south end of a partial rainbow seems to touch down on the hills behind the wind turbines southwest of Walla Walla, Wash. on May 18. (Greg Lehman/Walla Walla Union-Bulletin via AP)

Storm clouds over Fenway Park in Boston during the sunset on June 23. (Jim Davis/Globe Staff)

A tourist takes a picture of the city of Athens as the sun's rays shine through clouds at the ancient Acropolis hill, June 22. (Petros Giannakouris/Associated Press)

A rainbow is seen against rain clouds above the Sacre Coeur Basilica on Montmartre after a sudden rain shower hit Paris on February 23. (Christian Hartmann/Reuters)

A weathervain stands before a waning moon over Debrecen, Hungary, May 12. (Zsolt Czegledi/EPA)

A rainbow is pictured over the Shaw's Plaza parking lot in Salem, NH following an early evening heavy rain storm that passed through the area on July 1. (Jim Davis/Globe Staff)

A lightning strikes during a heavy storm over Poznan in the night of July 7. Severe storms passed last night over Poland causing lots of damages to buildings, trees, electricity and railway tractions. (LUKASZ OGRODOWCZYK/EPA)

Children dance and play as the setting sun illuminates the sky shortly before the start of a showing of "Despicable Me 2" in the first of a series of Movies Under the Stars behind Flint City Hall in Flint, Mich., on June 26. (Christian Randolph/The Flint Journal-MLive.com via AP)