A thermometer that uses mercury is not dangerous until you break it and drink it.

How do you stop bullets with magnets? o.O

well most people see robots after a camera captured it, so the glowing is legit

@Aron Wouldn't it leave radiation?

Thor's hammer could be an example of this...

My mothers town has a limit on building height, roof type & face colors because of historical reasons.

You could have people from Innsmuth colonizing your world.

Maybe they have a centrifugal device like in kubrick's 2001(on a larger scale) and mandatory physical activity?

@Johnny Obviously you can't rule out everything with an automated test, even if the data is then forwarded to humans for further inspection, but you can certainly compare with earth and look for anomalies, isolate them and either use samples on animals on board or send animals down on the surface to be monitored.As this is a colony ship it is expected to do as many tests as possible.For example they could test the alien fungal spores on human tissues. Anyways the best guinea pig would be clones: nobody cares for them so they are expendable.If they start dying once settled we need more tests...

@a4android Exactly!

What about a Black Hole?

Let's steal the fun from the robots... Let's start by polluting the orbit of the planet with some relay satellites and deploy a fleet of VR-controlled probes. Hoping that the ping isn't too high they could safely explore and rule out even more dangers.

The landing team would be aware of them (because they studied the video from the robot) and equipped properly because they can't assume the species behaviour: they are dealing with aliens, after all. They will eventually ascertain it when the team goes in the woods to capture some specimen and one of them tries to attack, gets incapacitated and held captive for further studies. However if the alien does only rely on smell to find enemies and be friendly as long as space suits are on, then the biologists will notice the aggressiveness of the caged specimens the moment they remove their suits.

the first manned expedition could check for / assume wild animals could occur and be prepared to kill them / take samples

I think that a video feed, some fences & guns resolves many problems. For the last point I believe they would analyze the air/soil/water samples with the robotic probe before even sending humans in there

Power Ranger: Lost galaxy had a nomadic colony

Spanish Inquisition!

He could have pressure problems...