How long does it take for a radio signal to reach Proxima Centauri?

(Story continues below image.) Even at light-speed, radio waves take a long time to reach even nearby celestial objects. A song broadcast today would need about four years to reach Alpha Centauri, which at a distance of about 4.3 light-years is the nearest star other than the sun.

How long does it take the radio signal to reach Earth?

Radio waves still travel at the speed of light roughly 186,000,000 miles per second. So it takes about 1.5 seconds (or more depending on lunar perigee or apogee) for a message to reach Earth.

How long does it take light to travel from Proxima Centauri to Earth?

Proxima Centauri is 4.2 light-years from Earth, a distance that would take about 6,300 years to travel using current technology. Such a trip would take many generations.

How long would it take to communicate with Alpha Centauri?

Alpha Centauri is about 25,000,000,000,000 miles away. Sound at sea level travels about 760 miles per hour (under standard conditions). So it would take sound about 3,750,000 years to get there if standard air extended all the way to the star.

How far away is Proxima Centauri?

4.246 light years
Proxima Centauri/Distance to Earth

How long does it take for radio waves to reach Pluto?

About 4.5 hours
How long does it take, you might ask, for the radio signal to reach the New Horizons spacecraft at Pluto, nearly 3 billion miles (4.6 billion km) from Earth? About 4.5 hours!

How long do radio waves take to reach the moon?

2.56 seconds
Radio waves propagate in vacuum at the speed of light c, exactly 299,792,458 m/s. Propagation time to the Moon and back ranges from 2.4 to 2.7 seconds, with an average of 2.56 seconds (the average distance from Earth to the Moon is 384,400 km).

What has been revealed about the faint signal from Proxima Centauri?

Since then, however, the discovery team has remained tight-lipped about the signal. But the information revealed to date is intriguing. The 64-meter Parkes radio telescope in Australia picked up the faint signal in April and May 2019 while observing Proxima Centauri, a red dwarf 4.25 light-years from Earth.

Could Proxima Centauri be used to travel to Earth?

Technologically advanced beings at Proxima Centauri could reach Earth in a few decades if they can traverse interstellar space at an appreciable fraction of the speed of light.

How many light years away is Alpha Centauri?

Alpha Centauri is the closest star system to our own solar system at 4.37 light-years distant (about 41.5 trillion km, 25.8 trillion miles or 277,600 AU). Proxima Centauri, often regarded as part of the system, is 4.22 light-years distant.

How long would it take sound to travel to a star?

Sound at sea level travels about 760 miles per hour (under standard conditions). So it would take sound about 3,750,000 years to get there if standard air extended all the way to the star. I guess that would be absolutely impossible-maybe that would coalesce into a big globular cluster or something (?).