Most of Deep Space runs in a compressed view — distances are shrunk so the whole solar system fits on a screen at once, useful for finding your way around but not for understanding what anything would actually look like up close. Real Scale View is the feature that switches that off.
The Problem It Solves
Select any planet, moon, dwarf planet, or spacecraft on the Deep Space map and activate Real Scale View, and everything nearby is recalculated using each object's true physical size and true distance from wherever you're standing — not a stylised icon sized for visibility, but a genuine answer to "how big would this really look from here?"
The Math Behind It
The core calculation is angular size — the same concept astronomers use to describe how large the Moon or Sun appear in Earth's sky, both of which happen to measure almost exactly half a degree despite being wildly different sizes, purely because of how their size and distance happen to balance out.
Whatever you've selected is always rendered at a comfortable, consistent size — so you're never left looking at an invisible speck, even if it happens to have no close neighbours in real life. Everything else around it is then sized to preserve its true angular relationship to that, exactly as the formula above defines it.
What You Actually See
Selecting a spacecraft now shows the spacecraft itself too, rendered as a reference point — so activating Real Scale View from, say, a probe en route to another planet gives you a genuine sense of where you are, not just what's around you.
Where It Draws the Line
Two honest limits keep the feature from becoming misleading. First, distance is still capped at a practical maximum for rendering — real interplanetary distances are large enough that without some limit, nothing would fit on screen at all. The true angle every object would occupy in your sky is preserved regardless, only the distance drawn to get there is capped.
Second, anything genuinely too far away — beyond 100 Astronomical Units, roughly Voyager 1's neighbourhood — simply isn't drawn at all. Rather than fake a marker for something at a meaningless distance, Real Scale View shows real emptiness, which is a more honest answer than pretending everything is always nearby.
How to Try It
Open Deep Space, select any object, then tap the 360° button that appears once something is selected. The view recalculates instantly, and switching between objects — or exiting back to the compressed view — is a single click away at any time.
Frequently Asked Questions
What is Real Scale View?
Real Scale View is a Deep Space feature that recalculates every nearby object's true angular size and true distance from whichever planet, moon, or spacecraft you have selected, instead of the compressed distances used for general navigation.
How is the size of each object calculated?
Using genuine trigonometry: angular size equals 2 times the arctangent of an object's real physical radius divided by its real distance from you. This is the same formula used to calculate how large the Moon or Sun actually appears in Earth's sky.
Why does the selected object always look the same size?
Whatever you select is always rendered at a comfortable, consistent size so you're never looking at an invisible speck, regardless of whether it has any close neighbours. Everything else around it is then sized to preserve its true angular size relative to that.
Can I use Real Scale View from a spacecraft?
Yes. Selecting any tracked spacecraft and activating Real Scale View shows the spacecraft itself as a reference point, with every nearby planet and moon rendered at its true relative angular size from that spacecraft's real position.
Try Real Scale View Now
Free, live, updated from NASA/JPL data — no account required.
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