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What's Up for May 2016

The sky is dark, the stars are gleaming – time for some astronomy. But wait a minute. I don't recognise any of them. Where are Orion and the Plough? I'm lost.

If this means you, read on. We can tell you how to spot the stars, pick out the planets, get to grips with the galaxies... OK that's enough alliteration. But you get the idea.

Now then, young stargazers. It may be May but it can still get cold at night, so put your coat on. Don't worry, no-one can see you and pretend they aren't cold at all even though they are only wearing a T-shirt. You can wear a baseball cap as well if you really want to, but take it from us, they are pretty useless when you want to look through a telescope as the peak gets in the way of the eyepiece. And if you turn it round it falls off when you crouch down. So take a tip and go for the good old bobble hat.

You will need a star map, and you will need to know how it works. This may seem obvious, but there is a knack to understanding these things. Here's our map for this month:

Whole sky for May 2016

All maps produced using Stellarium software.

Wrong way round?

Now don't write in and tell us that we have the points of the compass all wrong. This is a map of the sky, so you have to hold it over your head. When you do this, east and west will be the right way round.

It shows the whole sky, so the scale is quite small. Normally you turn to see different parts of it, so to see the view looking north, for example, hold the map upside down with north at the bottom.

The map shows the sky in mid May at about 11 pm, at the start of the month at 12 pm, or by the end of the month at 10 pm, though at this time of year the sky is too light to see much at that time. That's why we have had to make the time so late. All times are BST (British Summer Time, but they work more or less OK in other parts of the northern hemisphere).

TIP If you aren't sure of the direction of north from your location, click here for a page on Getting Your Bearings.

Making sense of the stars

If it all looks just like a lot of dots, and drives you dotty, here's the way to get to grips with the sky. Start with something familiar and work from there. Most people recognise the seven stars that in the UK we call the Plough and in the US is called the Big Dipper but which is really Ursa Major, the Great Bear. If you can't find it, it's because you aren't looking high enough – it's almost above your head at this time of year, so it's shown at the centre of this map.

Look below the Plough, about halfway between there and the horizon, and you will see a group of stars called Leo. Now use the map below to find more patterns nearby, but don't expect to see those convenient lines helping you to see the patterns. If you do see them, consult an optician or give back those glasses your friends gave you on 1 April.

Sky for May 2016

Other constellations to look for

Lower down and to the left of Leo is Virgo with its bright star Spica and Mars in the middle of Virgo. Another way to find Spica is to go up to the Plough and follow the curve of its handle round. First you come to a very bright star, Arcturus, and then you come to Spica, which is a lot lower in the sky. On the map is marked a sort of Y shape, which is quite easy to pick out, which helps you to spot Virgo. Virgo is full of faint galaxies, and if you have good binoculars and a fairly dark sky and want a challenge, follow the link to find out just where they are.  For a map with all the constellation names on it, click here.

An easier target is the constellation of Coma Berenices. This contains a very nice and large star cluster which you can see by eye in good skies, or using binoculars if your skies are lousy like most of us have to put up with. It's to the left of Leo, and above Virgo. Follow the link to find more objects you can look for.

This month’s bright planets

Jupiter is the most obvious planet, quite high up over in the south-west. Through binoculars you will see up to four of its bright moons, on either side. A telescope will show you dark belts, and if you're lucky you may see the Great Red Spot, though it isn't particularly prominent through a small telescope.

Then we have Mars, making its appearance in the evening sky for the first time this year. You can see it very low down over to the south-east on our map, and later in the evening it will have moved around to the south, but still low down. This isn't a good year for Mars observers. Although it is at its brightest and closest to us on 22 May, it is so low down that it will be hard to make out much detail from the UK. But even with a small telescope you will be able to see its orangey disc, and maybe a polar cap. Below is a sequence of images made by Alexei Pace from Malta back in March as Mars was getting ever closer and larger.

Saturn is also low down, and is following Mars through the night sky so it hasn't quite made it onto our map for this month. Though again, if you hang around till about midnight it will be visible, not quite as bright as Mars but very obvious low in the south-east. Next year and for a few years to come it will be even lower down as seen from the UK, so take a look at it now through a telescope if you can. In recent years the rings have been more or less edge-on to us, but now they are opening out again and look great. And you don't need a super-colossal telescope to see them – any reasonably good small telescope should show them using a magnification of 50 or more. If it doesn't, it isn't (reasonably good, that is).

Don't forget the Moon

It begins the month just after last quarter, which was on 30 April. That's when the Moon is only in the morning sky, so you won't see it unless you get up before dawn. Then we have new Moon on the 6th, when it’s in the same part of sky as the Sun and isn’t visible. First quarter – that’s a half Moon – is on the 13th and then full Moon this month is on the 21st. Finally, the Moon ends the month with last quarter on the 29th.
 
We have a whole section of this site about the Moon and what to observe, so do take a look.

Get more helpful info

OK, you've read all this for nothing, now comes the plug. This page is brought to you by the Society for Popular Astronomy, which is a really great society to join. It's based in the UK but there are members in other countries as well. It doesn't cost much to join, and there is a special rate for Young Stargazers. At least take a look at what we have to offer. Text by Robin Scagell