A recent analysis envisions what it would be like to communicate with a spacecraft traveling close ... An object moving close to the speed of light experiences time dilation.

Although they travel at the fastest possible speed (the speed of light,) they take a while to get here. The universe is big, so the news is delayed by the vast gulfs of space it has to cross to ...

Jenny Lisle you send the spaceship at the same speed to ... His idea was that, theoretically, the closer we come to traveling at the speed of light (186,000 miles per second), the more time ...

"Chemical rockets that we use today, even with the extra speed boost from flying by planets, or from swinging by the sun for a boost, just don't have the ability to scale to useful interstellar speeds ...

Alfredo (he/him) has a PhD in Astrophysics on galaxy evolution and a Master's in Quantum Fields and Fundamental Forces.

A new proposal uses an electron beam fired from a stable platform near the Sun, which could push a 1,000 kg spacecraft for ... roughly 20 percent the speed of light. That means the miniature ...