How do asteroids appear in long exposure images?
A) as complex curving and looping lines B) as points of light, like the stars
C) as resolved disks, like the planets D) as straight lines across a background of stars
Question 2
In the Drake equation (Number of Civilizations = NHP flife fciv fnow), we expect the term fciv to be small if ________.
A) most of the civilizations that have ever existed are still out and about in the galaxy
B) primitive life is common but intelligent life is rare
C) most habitable planets never actually get life on them
D) most civilizations destroy themselves within just a few hundred years of arising
Scorpions, Spiders and Sharks: Electron-Microscope Images
Blocked at every turn by congressional Republicans who hated him, President Obama turned to techniqu
Structure of the p53–DNA complex
Results from Kliegl's study show that older adults can learn complex information-processing
GENERAL BIO IMAGES
Antigen/TCR/ MHC Complex