Beta Hydri is a yellow subgiant 24.3 light-years away in the constellation Hydrus. It's the closest reasonably bright star to the south celestial pole and similar to what the Sun will become.
Beta Hydri is 24.33 light-years from Earth. That is about 230 trillion km (143 trillion miles), or 1.54 million astronomical units.
| Unit | Distance |
|---|---|
| Light-years | 24.33 |
| Kilometers | 230,000,000,000,000 km |
| Miles | 143,000,000,000,000 miles |
| Astronomical units (AU) | 1,540,000 astronomical units |
| Parsecs | 7.46 |
Light from Beta Hydri takes 24.33 years to reach Earth, so the light you see tonight left Beta Hydri 24.33 years ago.
Voyager 1, the fastest object humans have sent into deep space, travels at about 17 km/s. It would need about 429,100 years to cover this distance.
Notable For: Closest reasonably bright star to the south celestial pole
At light speed, it would take 24.3 years to reach Beta Hydri. At 1g constant acceleration with deceleration, a traveler would experience about 11.9 years.
Beta Hydri was once very similar to the Sun but is now older and has begun evolving into a subgiant. It shows what our Sun may look like in about 5-6 billion years.
Beta Hydri is 24.33 light-years from Earth, which is about 230 trillion km or 143 trillion miles. Light from Beta Hydri takes 24.33 years to reach us.
Beta Hydri is 24.33 light-years from Earth. One light-year is about 9.46 trillion km, the distance light travels in one year. In parsecs, Beta Hydri is about 7.46 parsecs away.
This time dilation calculator lets you enter a distance in light-years and acceleration in m/s² to see how time dilation affects your journey. It shows differences between traveler and observer times, maximum velocity, energy requirements, Doppler shift, Lorentz factor, and how distances vary between reference frames. Charts appear after you calculate.
Time dilation is an effect from Einstein's theory of special relativity. The faster you move, the slower time passes for you compared to someone standing still. At 90% of light speed, time passes about 2.3 times slower for the traveler than for someone on Earth.
The Time Dilation Formula is:
Where:
t' = time measured by the observer (on Earth)
t = time experienced by the traveler
v = velocity of the traveler
c = speed of light (299,792,458 meters per second)