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Tournament Earth - Best of EO: Round 2

Round 1 was full of upsets and surprises. Now it is time to pick your favorites from the “Neat 16” competitors in another week of voting. Round 2 ends on April 6 at 9 a.m. Eastern (U.S.)

To celebrate our 20th anniversary and the 50th anniversary of Earth Day, we want you to pick our all-time best image in a five-round knockout-style tournament. The brackets are: Past Winners, Home Planet, Land & Ice, and Sea & Sky.

Click to vote for one image in each pair. Click on each image headline to open a larger version, see complementary images, and read more about them.

View the current standings.

Region: Past Winners

The

The Dark Side and the Bright Side

The Deep Space Climate Observatory captured a unique view of the Moon as it passed between the spacecraft and Earth.

#1 Seed

VS

Ocean

Ocean Sand, Bahamas

Tides and ocean currents have sculpted the sand and seaweed beds into multicolored, fluted patterns.

#5 Seed
Sensing

Sensing Lightning from the Space Station

Bolts light up Earth’s atmosphere 4 million times a day. Scientists hope to observe a few.

#6 Seed

VS

A

A View of Earth from Saturn

Seen from a billion kilometers away, through the ice and dust particles of Saturn’s rings, Earth appears as a tiny, bright dot.

#2 Seed

Region: Home Planet

Twin

Twin Blue Marbles

This view of Earth from space is a fusion of science and art, drawing on data from multiple satellite missions and the talents of NASA scientists and graphic artists.

#1 Seed

VS

A

A Voyager Far From Home

After 35 years, the Voyager 1 space probe is farther from Earth than any manmade object has ever flown.

#4 Seed
All

All of You on the Good Earth

These iconic photos are not new, but their message never gets old.

#3 Seed

VS

Fire

Fire in the Sky and on the Ground

Astronauts on the International Space Station captured these views of the aurora australis and wildfires in Australia.

#7 Seed

Region: Ice and Land

Where

Where the Dunes End

Namibia’s sea of sand is bounded on its northern side by the impermanent Kuiseb River.

#8 Seed

VS

Roiling

Roiling Flows on Holuhraun Lava Field

Landsat 8 captured fine details of the lava flowing in Iceland between the Bardarbunga and Askja volcanoes.

#4 Seed
Retreat

Retreat of the Columbia Glacier

Recent retreat of the glacier’s West Branch took scientists by surprise.

#6 Seed

VS

Antarctica

Antarctica Melts Under Its Hottest Days on Record

Ice caps and glaciers felt the heat as temperatures reached 18.3°C (64.9°F).

#7 Seed

Region: Sea and Sky

Atafu

Atafu Atoll, Tokelau

The ring shape is the result of coral reefs building up around a former volcanic island in the South Pacific.

#8 Seed

VS

Making

Making Waves in the Andaman Sea

When tides, currents, and gravity move water masses over seafloor features, they can create wave actions within the ocean.

#5 Seed
Raikoke

Raikoke Erupts

An unexpected series of blasts from a remote volcano in the Kuril Islands sent ash and volcanic gases streaming high over the North Pacific Ocean.

#6 Seed

VS

Just

Just Another Day on Aerosol Earth

During one day in August, tropical cyclones, dust storms, and fires spread tiny particles throughout the atmosphere.

#2 Seed