1805day.year
Lewis and Clark Expedition: Scouting ahead of the expedition, Meriwether Lewis and four companions sight the Great Falls of the Missouri River.
Meriwether Lewis and companions sighted the Great Falls of the Missouri River while scouting in 1805.
As part of the Lewis and Clark Expedition, Meriwether Lewis and four members of the Corps of Discovery reached the Great Falls of the Missouri River on June 13, 1805. The impressive cascade spanned nearly a mile and posed a formidable obstacle to the expedition. Lewis’s observations documented the falls’ height, geology, and surrounding flora and fauna. The team’s portage around the rapids delayed their westward journey but showcased their perseverance. This landmark moment provided invaluable scientific and geographic knowledge of the American interior.
1805
Lewis and Clark Expedition
Meriwether Lewis
Great Falls of the Missouri River
1893day.year
Grover Cleveland notices a rough spot in his mouth and on July 1 undergoes secret, successful surgery to remove a large, cancerous portion of his jaw; the operation was not revealed to the public until 1917, nine years after the president's death.
President Grover Cleveland undergoes a clandestine surgery to remove a cancerous growth from his jaw, an operation kept secret for nearly a quarter-century.
In 1893, President Grover Cleveland discovered a malignancy on his jaw and chose surgery to maintain public confidence amid an economic crisis. On July 1, aboard a yacht en route to his home, a surgical team led by Dr. William W. Keen removed a sizable portion of Cleveland’s right mandible. The jaw was reconstructed with a silver prosthesis, and bleeding was controlled using contemporary techniques. To avoid alarming the nation, the details were withheld from the public, and Cleveland resumed official duties shortly after. The secret was only revealed in 1917, nine years after his death, sparking debates about presidential transparency and medical privacy. Historians regard this as one of the greatest cover-ups in American political history.
1893
Grover Cleveland
secret, successful surgery
1983day.year
Pioneer 10 becomes the first man-made object to leave the central Solar System when it passes beyond the orbit of Neptune.
NASA's Pioneer 10 spacecraft became the first human-made object to pass beyond Neptune's orbit, exiting the central Solar System.
Pioneer 10, launched in March 1972, achieved a historic milestone on June 13, 1983.\nIt was the first spacecraft to traverse the asteroid belt and conduct a flyby of Jupiter.\nOn this date, it crossed Neptune's orbital path, formally leaving the central Solar System.\nThis accomplishment marked humanity’s initial step into interstellar space.\nThe probe carried a gold-anodized plaque depicting information about Earth and its inhabitants.\nPioneer 10 continues to send faint signals, tracking its journey into the cosmic void.\nThe mission paved the way for future deep-space exploration by Voyager and other probes.
1983
Pioneer 10
Solar System
Neptune
2010day.year
A capsule of the Japanese spacecraft Hayabusa, containing particles of the asteroid 25143 Itokawa, returns to Earth by landing in the Australian Outback.
The Hayabusa spacecraft capsule, carrying samples from asteroid Itokawa, lands in Australia in 2010.
Japan’s Hayabusa mission achieved a historic milestone on June 13, 2010, as its return capsule landed in the Australian Outback.
The craft carried microscopic dust samples collected from asteroid 25143 Itokawa.
This marked the first time a spacecraft brought asteroid material back to Earth.
Scientists hailed it as a breakthrough for understanding the origins of the solar system.
The successful recovery paved the way for future sample-return missions.
2010
Hayabusa
25143 Itokawa