View of Mumbai city skyline.

PTI Photo

A partly cloudy sky after a morning rain, in Delhi.

Photo by Tribhuvan Tiwari/Outlook

Comet Neowise soars in the horizon of the early morning sky in this view from the near the grand view lookout at the Colorado National Monument west of Grand Junction, Colorado. The newly discovered comet is streaking past Earth, providing a celestial nighttime show after buzzing the sun and expanding its tail.


The lights of lower Manhattan burn through the low hanging clouds before sunrise on an overcast morning in New York City.

AP Photo/J. David Ake

With One World Trade Center seen in the background, a little girl leaps across boulders forming a breakwater along the Brooklyn Bridge Park in the Brooklyn borough, of New York.

AP Photo/Wong Maye-E

A dust storm accompanied by rains are seen over Lucknow's skyline.

AP Photo/Rajesh Kumar Singh

One World Trade Center, center bottom, and patchy clouds are lit up by the sunset, in Jersey City, New Jersey.

AP Photo/Julio Cortez

People enjoy a walk at dusk with the Panama City skyline on the background at Paseo de Las Bovedas on Casco Viejo neighborhood.

AP Photo/Arnulfo Franco

A man rides his bicycle on a mining pit in Recklinghausen, Germany.

AP Photo/Martin Meissner

In this photo released by China's Xinhua News Agency, skyscrapers are shrouded in fog in Hefei in eastern China's Anhui province. A weather system brought heavy fog to parts of eastern China.

Guo Chen/Xinhua via AP

With the lower Manhattan skyline as a background, ice floats in the Hudson River, as seen from Jersey City, New Jersey. Temperatures rose into the 50's Thursday in a January thaw that provided relief after a stretch of bitter cold.

AP Photo/Kathy Willens

The silhouette of a television tower contrasts with the sky painted with deep colour as the sun sets during a winter's evening, in Pamplona, northern Spain.

AP Photo/Alvaro Barrientos

Vehicles traveling on the Lincoln Tunnel helix are backdropped by the New York City skyline at rush hour, in Weehawken, New Jersey. Commuters are getting an early start on their holiday travel ahead of the Thanksgiving Day holiday.

AP Photo/Julio Cortez

Photograph by Getty Images

The Tribute in Light is seen in the sky above Lower Manhattan on the 16th anniversary of the Sept. 11 terror attacks, in New York.

AP Photo/Jason DeCrow

The skyline of the city is reflected in the river Main during night time behind the Ignatz-Bubis bridge in Frankfurt, central Germany. The picture was taken with long time exposure and a vertical movement of the camera.

Frank Rumpenhorst/dpa via AP

The sun rises over the city skyline with the Burj Khalifa, world's tallest building at the backdrop, seen from a balcony on the 42nd floor of a hotel on a foggy day in Dubai, United Arab Emirates.


A man wears a mask with a skeleton design near the smoggy night scene of the Central Business District under construction in Beijing, China. Chinese weather forecasters and state media say the dense, gray smog that has smothered much of China, closing schools and grounding planes, may finally soon give way.

AP Photo/Ng Han Guan

Low hanging clouds cover a full moon over Lower Manhattan seen from Liberty State Park, in Jersey City, New Jersey.

AP Photo/Julio Cortez

Colorful clouds hang over the skyline as the sun rises in Frankfurt, Germany.

AP Photo/Michael Probst