Question

What is Earth's maximum velocity away from the centre of the universe, when our orbit around the sun, the sun's orbit around the galaxy and the movement of the galaxy itself are all in alignment?

Answer 1

Short version: Earth's average orbital speed is about 30 kilometers per second. In other units, that's about 19 miles per second, or 67,000 miles per hour, or 110,000 kilometers per hour (110 million meters per hour).