Archive / temporal index

A SHORT HISTORY OF LOOKING UP.

Milestones that changed our relationship with the sky — and the concepts that could change it again.

SPACE DATA CENTER

THE WORLDS, IN SCALE.

MERCURY57.9M km

Diameter 4,879 km · Gravity 0.38g

VENUS108.2M km

Diameter 12,104 km · Gravity 0.9g

EARTH149.6M km

Diameter 12,742 km · Gravity 1g

MARS227.9M km

Diameter 6,779 km · Gravity 0.38g

JUPITER778.5M km

Diameter 139,820 km · Gravity 2.53g

SATURN1433.5M km

Diameter 116,460 km · Gravity 1.07g

COMPARE WORLDS

A SIDE-BY-SIDE VIEW.

WORLD PROFILE

EARTH

DIAMETER

12,742 km

GRAVITY

1 g

DAY LENGTH

24.6 hours

YEAR LENGTH

687 days

TEMPERATURE

15°C

MOONS

1

WORLD PROFILE

MARS

DIAMETER

6,779 km

GRAVITY

0.38 g

DAY LENGTH

24.6 hours

YEAR LENGTH

687 days

TEMPERATURE

-63°C

MOONS

2