The Pale Blue Dot - THE SAGAN SERIES

Journey to Mars Overview | NASA

Journey to Mars Overview | NASA



NASA is developing the capabilities needed to send humans to an
asteroid by 2025 and Mars in the 2030s – goals outlined in the
bipartisan NASA Authorization Act of 2010 and in the U.S. National Space
Policy, also issued in 2010.



Mars is a rich destination for scientific discovery and robotic and
human exploration as we expand our presence into the solar system. Its
formation and evolution are comparable to Earth, helping us learn more
about our own planet’s history and future. Mars had conditions suitable
for life in its past. Future exploration could uncover evidence of life,
answering one of the fundamental mysteries of the cosmos: Does life
exist beyond Earth?



While robotic explorers have studied Mars for more than 40 years,
NASA’s path for the human exploration of Mars begins in low-Earth orbit
aboard the International Space Station. Astronauts on the orbiting
laboratory are helping us prove many of the technologies and
communications systems needed for human missions to deep space,
including Mars. The space station also advances our understanding of how
the body changes in space and how to protect astronaut health.

The Milky Way's Globular Star Clusters --"Relics from the Early Universe"

The Milky Way's Globular Star Clusters --"Relics from the Early Universe"

 Observations of globular clusters' stars reveal that they originated
around the same time — more than 10 billion years ago — and from the
same cloud of gas. As this formative period was just a few billion years
after the Big Bang, nearly all of the gas on hand was the simplest,
lightest and most common in the cosmos: hydrogen, along with some helium
and much smaller amounts of heavier chemical elements such as oxygen
and nitrogen.