Archive · 14 Jan 2026
Voyager 1 Nears One Light-Day Distance
NASA's Voyager 1 spacecraft, launched in 1977, is about to reach a big milestone.
By November 2026, it will be one light-day away from Earth, which means it's about 16 billion miles away.
At this distance, it takes 24 hours for signals to reach the spacecraft and another 24 hours for a response.
Voyager 1 is the farthest human-made object from Earth, traveling at 38,000 miles per hour.
It studies space using four instruments, even though it's very old and far away.
NASA has to be careful with its power and communication because it's so far from home.
Voyager 1 is expected to reach one light-day distance from Earth by November 2026, about 16 billion miles away.
Communication with Voyager 1 takes 48 hours round-trip due to its extreme distance.
The spacecraft transmits data at 160 bits per second, comparable to early dial-up internet speeds.
Voyager 1 was launched in 1977 and is the farthest human-made object from Earth, currently 164.7 astronomical units away.
Four instruments remain operational, studying cosmic rays, magnetic fields, and plasma waves in interstellar space.
- Who
- NASA's Voyager 1 spacecraft
- What
- Nearing one light-day distance from Earth
- When
- Expected to reach milestone by November 2026
- Where
- Interstellar space, 164.7 astronomical units from Earth
- Why
- To continue studying cosmic rays, magnetic fields, and plasma waves in interstellar space
- Launch Year
- 1977
- Current Distance
- 164.7 astronomical units from Earth
- Speed
- 38,000 miles per hour relative to the Sun
- Data Transmission Rate
- 160 bits per second
- Expected Milestone
- One light-day distance by November 2026
- Operational Instruments
- 4 (studying cosmic rays, magnetic fields, and plasma waves)