The synthesis

Watch the solar wind leave the Sun (Heliophysics), then catch the aurora it triggers in Earth's night imagery (Earth). One physical chain, two divisions.

Where will the aurora be visible tonight?

What you can answer

See the aurora directly in VIIRS’ Day/Night Band over the polar night.
Connect a bright auroral night to the solar-wind shock that caused it.

What you can NOT answer with these datasets alone

Forecast the exact curtain shape hours ahead — that needs a magnetosphere model.
See aurora through cloud — the night band still sees cloud tops.

The cross-division bridge

Earth-anchored, reaching into Heliophysics. The Earth side is the VIIRS Day/Night Band, which images auroral glow during polar night. The Heliophysics side is DSCOVR at the L1 Lagrange point — its plasma-magnetometer measures the incoming solar wind ~30–60 minutes before it hits Earth, giving the physical cause for the auroral effect seen from orbit.

Sources

From another NASA division

☉ Heliophysics

DSCOVR Solar Wind (Plasma-Magnetometer)

Solar-wind speed and magnetic field measured a million miles upstream — the ~30–60 min early warning for geomagnetic storms.

DSCOVR_PlasMag · L1, real-time