How Long Would It Take to Travel to the Galactic Center (Sagittarius A*)?

Sagittarius A* is the supermassive black hole at the center of our Milky Way galaxy, located 26,000 light-years away. It has a mass of about 4 million Suns and significantly warps spacetime around it.

Distance 26000 light-years
Star Type Supermassive black hole
Constellation Sagittarius

How Far Is Sagittarius A* from Earth?

Sagittarius A* is 26,000 light-years from Earth. That is about 246 quadrillion km (153 quadrillion miles), or 1.64 billion astronomical units.

Distance to Sagittarius A* in different units
Unit Distance
Light-years26,000
Kilometers2.46 × 10¹⁷ km
Miles1.53 × 10¹⁷ miles
Astronomical units (AU)1,640,000,000 astronomical units
Parsecs7,970

Light from Sagittarius A* takes 26,000 years to reach Earth, so the light you see tonight left Sagittarius A* 26,000 years ago.

Voyager 1, the fastest object humans have sent into deep space, travels at about 17 km/s. It would need about 459 million years to cover this distance.

Time Dilation Formula Calculator

Spacecraft accelerates continuously throughout the journey. Realistic for ion drives or theoretical propulsion.

Distance to Sagittarius A*
Speed vs Time
This chart shows how quickly you accelerate to a fraction of the speed of light over time.
Distance vs Time
Shows distance covered (in light-years) over time.
Traveler's vs Observer's Time
Shows how time experienced by the traveler differs from time on Earth.
Energy Requirement vs Distance
Shows the (simplified) energy requirements for maintaining relativistic travel as distance increases.
Doppler Shift vs Time
Shows how the Doppler effect changes observed wavelengths over time.
Velocity vs Distance
Shows how your speed changes as you travel further from your starting point.
Lorentz Factor vs Time
Shows how the Lorentz factor (γ) grows over time as relativistic effects increase.
Proper vs Observer Distance
Shows how distance measurements differ between the traveler's frame and the observer's frame.

Facts About Sagittarius A*

Notable For: Supermassive black hole at the center of our Milky Way galaxy

Frequently Asked Questions

How long to travel to the galactic center?

At light speed, it would take 26,000 years to reach Sagittarius A*. However, at 1g constant acceleration with deceleration, a traveler would experience only about 40 years due to extreme time dilation.

What would happen near Sagittarius A*?

Near the black hole, time dilation becomes extreme due to both velocity and gravity. An observer near the event horizon would experience time passing much slower than on Earth.

How far away is Sagittarius A*?

Sagittarius A* is 26,000 light-years from Earth, which is about 246 quadrillion km or 153 quadrillion miles. Light from Sagittarius A* takes 26,000 years to reach us.

How many light-years is Sagittarius A* from Earth?

Sagittarius A* is 26,000 light-years from Earth. One light-year is about 9.46 trillion km, the distance light travels in one year. In parsecs, Sagittarius A* is about 7,970 parsecs away.

Explore Similar Destinations

Ross 154 9.69 light-years Deneb 2615 light-years Rigel 860 light-years Betelgeuse 700 light-years

How to Use This Calculator

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.

Results

  • Traveler's Time: How much time the person on the spaceship experiences
  • Observer's Time: How much time passes on Earth during the journey
  • Maximum Velocity: The highest speed reached, as a fraction of light speed

Interactive Charts

  • Speed vs Time: How quickly you accelerate towards light speed
  • Distance vs Time: How far you've traveled over time
  • Traveler's vs Observer's Time: Compare time passage between Earth and spaceship
  • Energy Requirement vs Distance: How much energy is needed as you travel further
  • Doppler Shift vs Time: How light wavelengths change during your journey
  • Velocity vs Distance: Your speed at different distances
  • Lorentz Factor vs Time: How much time dilation increases with speed
  • Proper vs Observer Distance: How distance measurements differ between frames

What is Time Dilation?

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.

What is the Time Dilation Formula?

The Time Dilation Formula is:

t' = t / √(1 - v²/c²)

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)