Life on a faraway planet—if it's out there—might not look anything like life on Earth. But there are only so many chemical ingredients in the universe's pantry, and only so many ways to mix them. A team led by scientists ...
Astrobiology
Sep 19, 2023
1
228
People have long dreamed of re-shaping the Martian climate to make it livable for humans. Carl Sagan was the first outside of the realm of science fiction to propose terraforming. In a 1971 paper, Sagan suggested that vaporizing ...
Space Exploration
Jul 15, 2019
13
2540
Astronomers have their own version of the single person's dilemma: Do you wait by the phone for a call from that certain someone? Or do you make the call yourself and risk getting shot down?
Space Exploration
Feb 13, 2015
67
2626
Astronomer and long time science advocate Carl Sagan once said that he was "not very good at singing songs." But on Nov. 9 in Washington D.C., his voice could be heard singing about the wonders of universe -- 13 years after ...
Other
Nov 12, 2009
8
0
To gaze at the stars is human. To be able to see them in three-dimensional detail is very nearly divine.
Astronomy
Apr 7, 2023
0
603
Are we alone? Forty years ago, NASA rocket scientists sought to answer this question by launching the Voyager spacecraft, twin unmanned spaceships that would travel further than any human-made object in history.
Space Exploration
Aug 27, 2017
6
2458
The concept of LightSail—spacecraft designed to propel through space on beams of sunlight— pushed through by nothing but the pressure of sunlight—has been around for years but this month made special news because the ...
Valentine's Day is special for NASA's Voyager mission. It was on Feb. 14, 1990, that the Voyager 1 spacecraft looked back at our solar system and snapped the first-ever pictures of the planets from its perch at that time ...
Space Exploration
Feb 16, 2015
0
79
(Phys.org) —Scientists as eminent as Stephen Hawking and Carl Sagan have long believed that humans will one day colonise the universe. But how easy would it be, why would we want to, and why haven't we seen any evidence ...
Astronomy
Aug 26, 2013
213
0
The autonomous, solar-powered Zoë, which became the first robot to map microbial life during a 2005 field expedition in Chile's Atacama Desert, is heading back to the world's driest desert this month on a NASA astrobiology ...
Space Exploration
Jun 11, 2013
0
0
