How long does it take to travel through the Universe at 1g?

1g is our acceleration in Earth's gravity: 9.8m/s². If a spaceship constantly accelerated at that rate, here's how far we could travel.

October 26, 2026

This photograph shows the 2018 launch of Rocket Lab's Electron rocket lifting off from Launch Complex 1 in New Zealand. Rockets convert fuel into energy and thrust, expelling it and losing mass as they accelerate. As a result, F = ma is too oversimplified to be used to calculate a rocket's acceleration, but the largest and most powerful modern rockets can still only sustain their accelerations for up to 8-10 minutes.

Credit : Trevor Mahlmann/Rocket Lab

Here on Earth, we accelerate towards the center of our planet at a constant rate: 9.8m/s².…