wizard stages:

 
 
 
 

Before beginning, get this activity's HAL (PDF, 257 KB) or get the full HAL (PDF, 355 KB) for the whole HDF lesson.

Estimating distances to objects in space

Imagine traveling to six objects in the HDF. To estimate how long it will take to travel to each one, we need to determine their distances from Earth. This has been a difficult task for astronomers. At this time, they only have distance information for a few of the objects. From those few, we have selected six possible destinations.

Your job is to place the six objects in order, from nearest to farthest, according to their relative distances from Earth.

ESTIMATE DISTANCES TO THE SIX LABELED OBJECTS

Place them in order, from left (nearest) to right (farthest).

Use the dropdown menus to set the order.

Hdf

In your Hubble Academy Log (HAL): Explain why you arranged the objects as you did. Be sure to mention any particular trait upon which you based your decision.