Final answer:
Venus was not entirely ignored by scientists, but early telescope limitations and its inhospitable atmosphere made it less of a target for study than bodies with visible surfaces. Improved technology like radar mapping and successful space missions have since increased interest and knowledge about Venus.
Step-by-step explanation:
Historically, scientists have not entirely ignored Venus; however, there were periods where less attention was paid to the planet because early telescope technology limited what could be observed. With its thick cloud cover, Venus does not allow for the observation of its surface using optical telescopes. Early astronomers focused on bodies such as Mars and the Moon, which have clearer surface visibility and seemed more promising for potential habitability or geological studies.
Furthermore, until the advent of radar mapping and space missions, Venus's extreme surface temperatures and atmospheric pressure posed challenges for exploration. It was the success of the Mariner, Venera, and Magellan missions that renewed scholarly interest and provided more detailed information about Venus's geology and atmosphere, prompting further study.