What’s on the Neptune poster
A definition and 5 facts worth remembering.
The furthest planet from the Sun, and the windiest place in the solar system.
- Winds reach 2,000 km/h — faster than anywhere else known.
- It was found by maths before anyone saw it.
- It has completed only one orbit since its discovery in 1846.
- Its moon Triton orbits backwards and has ice volcanoes.
- Sunlight there is about 900 times dimmer than here.
- Order — 8th
- Day — 16 hours
- Year — 165 Earth years
- Moons — 16
- Needs a telescope. It has never been visible to the naked eye.
A "day" is one spin. A "year" is one trip round the Sun. On Neptune they are nothing like ours.
Questions about the Neptune poster
- What’s on the Neptune poster?
- A definition and 5 facts worth remembering. The furthest planet from the Sun, and the windiest place in the solar system. Winds reach 2,000 km/h — faster than anywhere else known.; It was found by maths before anyone saw it.; It has completed only one orbit since its discovery in 1846.; Its moon Triton orbits backwards and has ice volcanoes.; Sunlight there is about 900 times dimmer than here.; Order — 8th; Day — 16 hours; Year — 165 Earth years; Moons — 16; Needs a telescope. It has never been visible to the naked eye.. A "day" is one spin. A "year" is one trip round the Sun. On Neptune they are nothing like ours.
- Who is the Neptune poster for?
- Neptune is filed under 4th Grade (ages 9–10), so it matches what that year asks a child to remember. It is equally useful to an older student revisiting science, and to the parent or teacher answering the question at the kitchen table.
- When should you use the Neptune poster?
- Needs a telescope. It has never been visible to the naked eye. A wall chart earns its place by being glanceable from where the work is happening, so Neptune belongs on the wall where that science work actually happens, within glancing distance, rather than filed away.
- What other posters go with Neptune?
- Earth, Jupiter and Mars sit alongside Neptune in the 4th Grade set. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.EarthJupiterMars
- Is the Neptune poster free to download and print?
- Yes. Neptune downloads as a free PDF with no account, no email and no watermark, like everything else in the 4th Grade set. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Neptune poster print at?
- Neptune is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Neptune loses nothing.Printing guide
Related posters
Charts that sit alongside Neptune on the same wall.
Browse every 4th Grade poster, or start from the full catalogue.