There was a lot of debate about what exactly to put in the tablet, but they converged on the following:
Something like a simplified Gray's Anatomy. Asteralians, aside from being bigger, are also: hermaphroditic (they have external genitalia in the form of a penis and testicles but have a cloaca which opens into a rectum and a vagina, and there's a flap that closes the vagina like the epiglottis in the throat), have a nictitating membrane, can still the movement of fluid in the semicircular canals to stop dizziness especially in zero-g, have much less muscle and bone atrophy when not being put under load, and their skin color ranges from pure white to pure black to shades of grey in between. They tan evenly, and their hair color is the inverse of their skin color (someone with light gray skin has dark grey hair). Their irises are light gray though they can turn opalescent in some situations. They have very little variation in height.
They seem well-adapted to space life, generally.
Several books about Standard Asteralian intended for immigrants and also linguists. It has audio and video of all the phonemes. Amentan and Asteralian mouths are very similar and the former can pronounce all the phonemes, though Asteralians have fewer teeth and longer tongues.
Various children's storybooks. Many aren't very contentful, but many are educational. The Asteral Accord is a federal democracy, which contrasts many other countries where the Crowned is the ruler. They have trade relations with so many peoples! Look at these peoples (they look very different from Asteralians)! It's giving primary school globalism aesthetic with furries and big-boobed elves. The Asteral Accord has a very strict policy of armed neutrality and non-aggression and this is how they are able to maintain good relations with other people and trade with them and this is Very Good. Asteralians marry, most often in pairs. People have godparents which are sort of like lesser or backup parents and all children have to have them. Children attain the status of adult when they turn three (and can vote and sign contracts), and this is also when puberty starts. Many young children are raised communally in creches. Most of the storybooks have space imagery and it seems that most Asteralians live in space.
Government-produced pornography intended to teach teenagers and immigrants about sex. It's very similar to sideways male Amentan porn, save for the narrator explaining what's happening. They do not use protection or talk about diseases. Asteralians naturally produce anal lubrication. Asteralians don't have a breeding season.
They may be able to deduce from the wording that immigrants adopt the form of Asteralians when they immigrate. It's said that a priest is involved but any further details are absent. Also apparently priests are involved in allowing people to have children — they do have population control. Also they have average sex drives comparable to young Amentans in spring.
They did not put any hypnotic effects on the media!
The tablet is capable of displaying media but otherwise has no special capabilities.