The Hubble Space Telescope Has Detected Galaxies with Apparent Magnitudes

question 8

Multiple Choice

The Hubble Space Telescope has detected galaxies with apparent magnitudes of about 30.Approximately how much fainter are these galaxies than stars with an apparent magnitude of 5?

• A) 10²⁵ times
• B) 10¹⁰ times
• C) 2,500 times
• D) 25 times

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Definitions:

Rhizobium

A genus of bacteria that forms symbiotic relationships with legumes, fixing nitrogen from the air into a form that plants can use for growth.

Nitrogen Fixation

The process by which certain bacteria convert atmospheric nitrogen into ammonia, making it available for plants and other organisms.

Earth's Tilt

The angle between Earth's rotational axis and its orbital axis, which significantly influences seasonal changes and climate.

Denitrification

A microbial process by which nitrogen in the soil is converted back into gaseous nitrogen, removing it from the ecosystem.