Nina Sen

Kelli Klymenko, a photographer in Sedona, took the image from Cathedral Rock Trail in Arizona.

Minutes before clouds gathered over the night sky, astrophotographer Matt Pollock caught this snapshot of the Milky Way on March 3, 2016 from Cherry Plain State Park in Petersburg, New York.

Astrophotographer John Chumack. captured the heart-shaped sunspot from his backyard Observatory in Dayton, Ohio on April 12, 2016.

Skywatcher Chris Schur was able to glimpse Comet Linear 252P with his naked eye just after capturing it on camera. The image was taken from Payson, Arizona on the morning of April 2.

Astrophotographer Giuseppe Petricca took this image about two minutes prior to the start of the full totality phase of the supermoon total lunar eclipse on Sept. 27, 2015.

This image of the Milky Way from the edge of the Grand Prismatic Spring in the Midway Geyser Basin in Yellowstone on June 27, 2015.

Astrophotographer Brian Drourr took this image on June 8, 2014 from Champlain Valley, Vermont. See how he captured the aurora view here.

This stunning image of the Milky Way was taken from the Azores, an area with nine volcanic islands in the Atlantic Ocean near Portugal. See how veteran photographer Miguel Claro did it.

As of this week, 150 million acres of Amazon rainforest are now safe.

Astrophotographer Amit Ashok Kamble captured two spectacular views of our Milky Way galaxy from Pakiri Beach in New Zealand. See how the space photographer created the amazing galaxy views here.

Astrophotographer Dora Miller sent in these photos of a spectacular northern lights show over Alaska on April 20. See what it felt like to see the dazzling aurora display.

Two Michigan-based photographers, Terry Hancock of Fremont and Robert Fields of Howell Township, captured this brilliant image of three nebulas and a star cluster on April 11. See how they did it.

Night sky photographer Giuseppe Petricca of Pisa, Italy, took these gorgeous images on March 3 of the crescent moon illuminated with earthshine over an Italian citadel. See how he did it.

Scientists put five-second rule to the test.

Incredible video shows a gang of orcas attacking a lone blue whale off the coast of California.

The dazzling northern lights dance in a stunning display over Swedish Mountains in these beautiful images and video captured by aurora photographer Chad Blakely of Lights Over Lapland.

Scattered dots of red and yellow decorate what appears to be an icy, blue terrain in this award-winning microscope photo.

Spectacular colorized scanning electron micrograph shows Mycobacterium tuberculosis bacteria up close.

Enlarged fly eye takes top prize in outstanding microscopy photo contest.

This fascinating video explains how a raindrop falls through the atmosphere and why a more accurate look at raindrops can improve estimates of global precipitation.

The small intestinal section from a mouse is revealed in this fascinating microphotograph. See how incredible image was made.

Increasing air pollution is threatening the health of those living in the Indian city of New Delhi.

Incredible image of a volcanic eruption captured from an astronaut aboard the International Space Station.

Fascinating time-lapse video shows bubbly brewing process of a seasonal strong ale.

A new type of toad species was discovered hiding in the Peruvian Andes. See its unique “dead-leaf pattern.”