Cruising

 Copilot:

Artemis mission; how long did it take Armstrong an Co to reach the moon on the first manned mission, and how long should it take Artemis?

Short answer: Apollo 11 took a little over 4 days to reach the Moon, while Artemis II is expected to take roughly 4–6 days to get there as part of its ~10‑day lunar‑flyby mission.

Below is the clear breakdown with citations.

🚀 How long did Apollo 11 take to reach the Moon?

Apollo 11 launch: July 16, 1969

Lunar landing: July 20, 1969

Total travel time to landing: 4 days, 6 hours, 45 minutes 

This aligns with the typical ~3‑day translunar coast, but Apollo 11’s trajectory made the trip slightly longer.

🌙 How long will Artemis II take to reach the Moon?

Artemis II is not a landing mission—it is a lunar flyby designed to test Orion’s life‑support and deep‑space systems before Artemis III attempts a landing.

Expected timeline

Mission duration: ~10 days total 

Translunar travel time:

Orion will perform a translunar injection on Day 2.

The spacecraft is expected to reach the Moon around Day 6 of the mission. 

Closest approach: ~4,000 nautical miles above the lunar surface (not entering low lunar orbit). 

Why longer than Apollo?

Artemis II follows a free‑return trajectory, looping around the far side of the Moon before gravity slingshots the crew back toward Earth.

The mission is designed for system testing, not speed.

                                                                                           

f you’d like, I can also compare Artemis I, Artemis II, and the planned Artemis III landing timeline to show how NASA is sequencing the return to the lunar surface.

What will Artemis III have as a timeline?

Artemis III is currently planned as the first crewed lunar landing of the Artemis program, targeting a launch in late 2027 and a mission lasting roughly 30 days, including nearly a week on the lunar surface. Here’s the clearest, citation‑based breakdown of what NASA has publicly outlined so far.

🌕 Artemis III: Mission Timeline (Based on Current Plans)

🟦 Launch Window

Planned launch: Late 2027 (after a NASA postponement from 2026 due to technical challenges).

🟦 Mission Duration

Approx. 30 days total.  

🚀 Step‑by‑Step Mission Flow

1. Launch & Earth Orbit Operations

Crew launches aboard Orion on the SLS rocket from Kennedy Space Center.

2. Transit to Lunar Orbit

Orion travels to lunar orbit, entering a near‑rectilinear halo orbit (NRHO) around the Moon.

3. Docking with the Human Landing System (HLS)

Orion docks with SpaceX’s Starship HLS (or a Blue Origin lander, depending on final selection).

Two astronauts transfer to the lander.

4. Descent to the Lunar Surface

The lander carries two astronauts to the lunar south pole, a region of scientific interest due to possible water‑ice deposits.

5. Surface Mission (~6.5 days)

Astronauts conduct:

Moonwalks

Geological sampling

Instrument deployment

Exploration of shadowed craters

They will wear Axiom Space’s advanced EVA suits.

6. Ascent & Rendezvous

After ~6.5 days, the lander returns the crew to Orion in lunar orbit.

7. Return to Earth

Orion performs a gravity‑assisted return trajectory and splashes down in the Pacific Ocean.

🧭 Why Artemis III Matters

First human lunar landing since Apollo 17 (1972).

First woman and first person of color expected to walk on the Moon.

Focus on the lunar south pole, where water‑ice could support long‑term habitation and fuel production.

                                                                           

If you want, I can also map how Artemis III compares to Apollo landings, or break down what the astronauts will actually do hour‑by‑hour on the surface based on NASA’s current planning.

Are the current Artemis team travelling any faster than the initial Armstrong team was; or is cruising just cruising, best that can be done...

Here’s the interesting truth: Artemis crews are not traveling meaningfully faster than Apollo crews did.  

And that’s not because NASA lacks the technology—it’s because orbital mechanics, fuel constraints, and mission design still dictate the same basic cruise profile.

Let’s unpack it cleanly.

🚀 Are Artemis astronauts traveling faster than Apollo astronauts?

🌑 Short answer:

No.  

Both Apollo and Artemis spacecraft travel at roughly the same speeds during translunar cruise—about 10–11 km/s after the translunar injection burn, then coasting at ~1 km/s relative to the Moon as they approach.

The limiting factor isn’t the rocket’s raw power.

It’s physics.

🧭 Why speeds are similar: the physics that hasn’t changed

⭐ 1. The Moon is still 384,000 km away

No surprise there. The distance hasn’t changed.

⭐ 2. The energy required to escape Earth’s gravity is fixed

To break free of Earth, you need to reach escape velocity:

𝑣 ≈ 11.2 km/s

Apollo’s Saturn V and Artemis’s SLS both inject the spacecraft into a trajectory that hits roughly this number.

⭐ 3. Going faster is actually worse

If you try to reach the Moon faster:

You need exponentially more fuel

You arrive with dangerously high relative velocity, requiring huge braking burns

You risk missing the Moon entirely if your trajectory is even slightly off

NASA optimizes for precision, safety, and fuel efficiency, not speed.

⭐ 4. Cruising is basically coasting

Once the translunar injection burn is done, the spacecraft is in a free‑fall trajectory.

You don’t “throttle up” in deep space—you coast along a ballistic path.

This is why Apollo took ~3 days and Artemis takes ~4–6 days depending on mission design.

                                                                                    

Artemis missions often take longer because:

They use near‑rectilinear halo orbits (NRHO) for Gateway compatibility

They follow free‑return safety trajectories

They are designed for system testing, not speed

🧠 So is “cruising just cruising”?

Pretty much, yes.

Once you’re on the translunar trajectory, you’re in a gravitational ballet between Earth and the Moon.

You can’t just “step on the gas”—there is no gas pedal in space.

The only way to dramatically shorten the trip would be:

A nuclear thermal rocket

A nuclear electric propulsion system

A fusion drive

Or some other high‑efficiency propulsion that doesn’t exist yet for crewed missions

NASA is studying these, but they’re decades away from human use.

🌙 Bottom line

Artemis astronauts are not traveling faster than Apollo astronauts.  

They’re traveling smarter, with safer trajectories, more complex orbits, and more advanced spacecraft—but the cruise speed is still dictated by the same celestial mechanics that governed Apollo.

If you want, I can also break down:

Why NRHO is used for Artemis

How a free‑return trajectory works

What a nuclear thermal rocket would change in Moon travel times