The last survivors of their respective homeworlds, the Guardians of the Galaxy traveled from the 31st century to present-day Earth to obtain records about the Badoon, extraterrestrials intent on invading the planet. But the mission proved more existential than informative.
Charlie-27 (from Earth's Jupiter colony), was particularly taken aback by the current state of human civilization (Giant-Size Defenders #5).
A temporal distortion that coincided with the arrival of the Guardians of the Galaxy attracted the attention of Dr. Strange, Valkyrie, Hulk, and Nighthawk, while calling forth the monstrous Eelar.
An added complication involved a chance meeting between the heroes and young Vance Astrovik (whose adult counterpart would join the Guardians of the Galaxy after taking a thousand-year trek into space).
The adult Vance Astro later tried to persuade his younger self to forego any dreams of becoming an astronaut and thereby avoid the loneliness he would face as a man out of time (Marvel Two-in-One #69). Other original members of the Guardians of the Galaxy were Martinex (from Earth's colony on Pluto) and Yondu (native of Centauri-IV).The team also made guest appearances in Defenders #26-29.