Planetary Society on Twitter: "29 years ago today, Voyager 1 took this iconic image of Earth, appearing as a tiny point of light, a crescent only 0.12 pixel in size. The pale blue dot. The only home we've ever known.…"
Planetary Society on Twitter: "As the spacecraft left our planetary neighborhood for the fringes of the solar system, engineers turned it around for one last look at its home planet at the suggestion of our co-founder Carl Sagan."
Planetary Society on Twitter: "Watch Dr. Sagan unveil the pale blue dot and read some of the most important words ever written about our home planet at…"

Pale Blue Dot, A Pale Blue Dot | The Planetary Society

It was far away, some 4 billion miles / 6 billion kilometers (6 terameters) / 40 AU away, so far away that its radio broadcasts took 5 1/2 hours to make the trip.

Here are some more Earth-from-space landmark images:

The first photograph of Earth taken from space | Cosmos - in 1946, by a camera carried to 105 km altitude by a captured V-2 rocket.

TIROS-1 the first Television Infrared Observation Satellite. It was launched on April 1, 1960, and lasted about 2 1/2 months before it failed. It took its first picture of the Earth from space on the same day, soon after it went into orbit, at about 650 km / 400 mi up.

Apollo 8's Earthrise | Solar System Exploration: NASA Science taken on December 24, 1968 from an orbit around the Moon, about 380,000 km / 240,000 mi away.

Space Images | You are here: Earth as seen from Mars taken in early 2004, by Mars rover Spirit.

Space Images | Earth and Moon as Seen from Mars taken on October 3, 2007 by the Mars Reconnaissance Orbiter.

The Day the Earth Smiled | NASA taken by the Cassini spacecraft from Saturn orbit on July 19, 2013.

We cannot go out into interstellar space to observe our homeworld from there, at least not just yet, so we must content ourselves with simulations.

Simulations of Light Curves from Earth-like Exoplanets - Planetary Habitability Laboratory @ UPR Arecibo

The Earth does indeed look bluish, though continents make it less bluish, and when in full view, the Sahara Desert makes it neutral-colored.