Some Astronomy Websites for Homeschool Science Students
by Todd Durell

Source: Hubblesite.org
Lately I’ve come across some astronomy websites I really like:
Chromoscope gives you a picture of the Milky Way and lets you adjust the wavelengths you’re viewing, so you can “see” what the galaxy looks like using wavelengths (like X-rays or microwaves) beyond the visible spectrum.
The Hubble Site Gallery, sponsored by NASA, has amazing photographs taken by the Hubble telescope (examples appear on this page).

Source: Hubblesite.org
UDF Skywalker v. 1.o, utilizes images from the Hubble telescope to produce a composite image of over 10,000 galaxies you can search.
Moon Phase, as the name suggests, has a detailed daily photo of the moon showing its current phase.

Source: Hubblesite.org
Finally, the Neave Planetarium offers an interactive star map (with constellations).

