Julian’s space facts

· Super Saturn is a exoplanet. Its rings are 200 x bigger than Saturn

· The ghost planet is actually not a planet, it’s an exoplanet but it’s not a normal gas giant. It’s gas got sucked away by it’s sun because it was so close. So it left a ghosty core, so that’s why we call it the ghost planet. (This one dictated by Julian)

· Jupiter has a big red spot, a litl red spot and a baby red spot.they are all storms. But the baby red spot got eaten by the big red spot and it got larger!

Planet information

Compiled by Daddy

Planet	Diameter	Length of day	Length of year	Time for sunlight to reach it	Surface temperature	Gravity	Mass
Mercury	3,000 miles	59 Earth days	88 Earth days	3 minutes	164 ^oC	3.7 m/s^2	5% Earth
Venus	7,500 miles	243 Earth days	225 Earth days	6 minutes	464 ^oC	8.87 m/s^2	80% Earth
Earth	8,000 miles	24 Earth hours	365 Earth days	8 minutes	20 ^oC	9.81 m/s^2	100% Earth
Mars	4,000 miles	25 Earth hours	687 Earth days	12 minutes	-64 ^oC	3.7 m/s^2	10% Earth
Jupiter	86,000 miles	10 Earth hours	12 Earth years	43 minutes	-185 ^oC	24.8 m/s^2	320x Earth
Saturn	72,000 miles	10 Earth hours	30 Earth years	83 minutes	-140 ^oC	10.4 m/s^2	95x Earth
Uranus	31,000 miles	17 Earth hours	84 Earth years	165 minutes	-197 ^oC	8.7 m/s^2	14x Earth
Neptune	30,000 miles	16 Earth hours	165 Earth years	4 hours	-201 ^oC	11.3 m/s^2	17x Earth
Makemake	450 miles	11 Earth hours	306 Earth years	6 hours	-233 ^oC	0.35 m/s^2	0.01% Earth
Pluto	1,500 miles	6 Earth days	248 Earth years	5 hours	-229 ^oC	0.62 m/s^2	0.02% Earth
Haumea	485 miles	4 Earth hours	283 Earth years	6 hours	-233 ^oC	0.6 m/s^2	0.006% Earth
Eris	720 miles	16 Earth days	560 Earth years	9 hours	-233 ^oC	0.82 m/s^2	0.002% Earth
Ceres	292 miles	9 Earth hours	4 Earth years	22 minutes	-103 ^oC	0.28 m/s^2	0.0001% Earth

Galaxy information

Compiled by Daddy

galaxy	Segue 2	Milky Way	ESO 383-76
Type	Dwarf spheroidal	Barred spiral	Elliptical
Size	110 light years	87,000 light years	1.8 million light years
Mass (in Solar masses)	55,000	1.1 trillion	2.15 trillion
Number of stars	1,000	300 billion	100 trillion
Distance	114,000 light years	0 light years	650 million light years

Solar neutrinos

Compiled by Daddy

Solar neutrinos are tiny particles – they’re smaller than an atom and so small we can’t see them with any sort of microscope. They’re so small that they can go right through things: you will have had thousands of neutrinos go right through your body and you would never have known! They can even go right through the Earth.

They are created in the core of the sun where something called nuclear fusion is happening. Fusion is when atoms are pushed together really hard to make a different sort of atom. It can only happen when things are really hot and really squashed. This happens inside all stars and it is what makes them shine.

Humans have tried to make fusion happen on Earth, but it’s really tricky to make it work. Some fusion experiments happened near Oxford, not too far from where we live, inside a big donut shaped container. For a very brief moment, that container was hotter than the centre of the sun!