Question

why might astronomers be particularly interested in studying objects using wavelengths outside the visible spectrum?
objects outside our solar system only emit non - visible light
these wavelengths can reveal information about composition and processes that visible light cannot show
non - visible wavelengths are easier to detect with telescopes
visible light is too weak to travel through space
a photographer notices that when they use a red filter on their camera, green leaves appear very dark in the photo. what principle explains this observation?
green leaves absorb red light, so little red light passes through the filter to reach the camera
green leaves reflect red light too strongly
the camera sensor cannot detect green light through red filters
red filters automatically make green objects appear darker

Explanation:

First Question

Different wavelengths (including non - visible ones) carry unique information. For example, infrared can show heat signatures related to star formation regions (composition and processes), while visible light may not capture such details. Objects outside the solar system do emit visible light (so the first option is wrong). Non - visible wavelengths are not necessarily easier to detect (depends on the telescope and wavelength), and visible light is not too weak to travel through space.

When a red filter is used, it allows mainly red light to pass through. Green leaves absorb red light (they reflect green light). Since the green leaves absorb the red light that the filter would let through, little red light (which is what the filter allows) reaches the camera from the green leaves, making them appear dark. Green leaves do not reflect red light (they reflect green), the camera sensor can detect green light but the red filter blocks it (not that the sensor can't detect), and it's not that the filter "automatically" makes green objects darker but due to the absorption - transmission relationship.

Answer:

These wavelengths can reveal information about composition and processes that visible light cannot show

Second Question