NASA Planetary Fact Sheet
These are average values, not live weather.
Checked on
See the source ↗Every important figure shows its source, its type and when it was last checked.
Reference facts — the size of a planet, the length of a year — rarely change. They are shown as average values.
Live data — the position of the ISS, solar weather — can change within minutes. SolarScope then shows the time of the last update, or the word “unavailable” if the service does not answer.
These are average values, not live weather.
Checked on
See the source ↗The number of moons can change when a new moon is confirmed.
Checked on
See the source ↗These values describe Mars in general: they are not live measurements.
Checked on
See the source ↗Missions change over time. SolarScope shows when each figure was checked.
Checked on
See the source ↗The project is still being studied: no return date for the samples is shown as certain.
Checked on
See the source ↗The pictures are official; their colours can stand for light our eyes cannot see.
Checked on
See the source ↗This data changes: SolarScope says when it is unavailable.
Checked on
See the source ↗The position changes all the time: it is shown with the time it was updated.
Checked on
See the source ↗The 3D maps of Jupiter, Saturn and Neptune come from Solar System Scope, under the CC BY 4.0 licence, based on NASA images. The textures of Mercury and Uranus are illustrations made for SolarScope, not photographs.
The texts of the lessons, questions and guides are under the CC BY 4.0 licence: you can use them in class or elsewhere as long as you credit “SolarScope”. The source code is under the MIT licence. Pictures from space agencies keep their own terms.
When a live source is temporarily unavailable, SolarScope prefers to say so clearly. That way, an old value or an estimate is never passed off as a current observation.