Artemis-II will travel farther than the previous human distance record, pushing past the Moon's far side into deep space for the first time since the Apollo era ended in 1972. (Photo: Nasa)

Artemis-II is set to reach the Moon, break record for farthest human spaceflight

No human has travelled beyond low Earth orbit since 1972. Nasa's Artemis-II mission, launched on April 2, 2026, is taking four astronauts farther from Earth than anyone in history. Here is what makes this journey extraordinary.

by · India Today

In Short

  • Artemis-II will travel 4,02,336 kilometres from Earth, the farthest any human has ever been.
  • A free-return trajectory uses the Moon's gravity to bring the crew safely back to Earth.
  • Orion will re-enter Earth's atmosphere at 40,233 kmph, setting a new crewed spacecraft record.

For 53 years, every human being who has ventured into space has done so within a narrow band of sky that barely scratches the surface of the cosmos.

Astronauts aboard the International Space Station (ISS) orbit at roughly 400 kilometres above Earth. Satellites, space telescopes, and everything humanity has placed in the sky live within this same tight neighbourhood.

No human has left Earth's orbit since December 1972. Nasa's Artemis II ended that on April 2, 2026, taking four people on a journey farther into space than anyone in history. (Photo: Nasa)

Beyond it lies deep space: vast, radiation-soaked and untouched by human presence since December 1972.

On April 2, 2026, Nasa's Artemis-II mission ended that five-decade confinement.

You can explore the journey of the four astronauts in this detailed Artemis II interactive story.

The Artemis-II crew is set to begin the lunar flyby on April 7, 2026, at 12:15 am IST.

HOW FAR WILL ARTEMIS-II ACTUALLY GO?

The crew will travel approximately 4,02,000 kilometres from Earth, swinging around the far side of the Moon before heading home.

To put that in perspective, the International Space Station (ISS) orbits at 400 kilometres above Earth. The Moon itself sits roughly 3,84,633 kilometres away.

Artemis-II will travel farther than the previous human distance record, pushing past the Moon's far side into deep space for the first time since the Apollo era ended in 1972. (Photo: Nasa)

Artemis-II goes past the Moon and beyond, into territory no human has visited since the Apollo era.

The current record for the farthest any human has ever travelled from Earth stands at 4,00,171 kilometres.

Artemis II will surpass it by roughly 2,500 kilometres, deliberately, with full preparation and purpose.

WHAT IS A FREE-RETURN TRAJECTORY, AND WHY DOES IT MATTER?

Artemis-II will travel on what is called a free-return trajectory.

This means the spacecraft uses the Moon's own gravitational pull to slingshot itself naturally back toward Earth, without needing a separate engine burn to come home.

Using the Moon's gravitational pull, Orion will slingshot naturally back toward Earth without a separate engine burn, giving the crew a safe path home even if the propulsion system fails mid-mission. (Photo: Nasa)

The Moon does the steering. It is an elegant application of orbital mechanics, the science of calculating how objects move through space under the influence of gravity, and it doubles as a crucial safety net.

Even if Orion's main propulsion system failed completely mid-mission, the crew would still return to Earth safely.

WHAT MAKES DEEP SPACE SO DIFFERENT FROM THE SPACE STATION?

Beyond low-Earth orbit, the region up to about 2,000 kilometres above the planet, spacecraft and astronauts lose the protection of Earth's magnetic field.

This field acts as an invisible shield, deflecting harmful radiation from the Sun and from deep space.

Orion's heat shield will endure temperatures of around 2,760 degrees Celsius as the spacecraft screams back into the atmosphere. (Photo: Nasa)

Astronauts on Artemis-II will be exposed to levels of cosmic radiation, high-energy particles travelling at nearly the speed of light that no human has experienced since the Apollo era.

Monitoring how the crew's bodies respond to this environment is one of the most scientifically significant aspects of the entire mission.

WILL ARTEMIS-II ALSO SET A SPEED RECORD?

Yes. When Orion re-enters Earth's atmosphere at the end of the mission, it will be travelling at approximately 40,200 kilometres per hour, faster than any crewed spacecraft has ever returned to Earth.

Nasa's Orion capsule. (Photo: Nasa)

Re-entry is the phase when a spacecraft plunges back through the atmosphere at extreme velocity, generating ferocious heat through air compression.

Orion's heat shield will face temperatures of around 2,760 degrees Celsius, nearly half the surface temperature of the Sun, and it must hold without fail.

WHY DOES ALL OF THIS MATTER BEYOND THE MOON?

Every piece of data gathered during Artemis-II, on radiation exposure, spacecraft performance and human physiology in deep space, feeds directly into Nasa's plan to eventually send humans to Mars.

Artemis II will travel 4,02,336 kilometers from Earth, the farthest any human has ever been. (Photo: Nasa)

The Moon is not the destination. It is a rehearsal.

And Artemis-II is the most important rehearsal humanity has attempted in more than five decades.

- Ends