In very dark situations, it's no problem at all to capture the stars, especially with a 35mm sensor. However, illuminating the foreground is a challenge when there is an absence of light at ground level. The combination of ambient light and long exposure will only light it a little, and that essentially becomes your threshold for usable image data. Attempting to recover too much shadow data will just amplify the "underexposure", and look noisy. You need a very bright flashlight if you would like the foreground to participate in your photo.