Back in December 1990, during its flyby of Earth, NASA’s Galileo spacecraft, which studied the planet Jupiter and its moons, as well as several other Solar System bodies, pointed its instruments towards Earth, at the urging of Carl Sagan. And, it has found evidence of life on our planet. This can be a key to detect vegetation on exoplanets – which is a key to a possible intelligent extraterrestrial life.
In a paper published on Nature, researchers wrote “The Galileo spacecraft found evidence of abundant gaseous oxygen, a widely distributed surface pigment with a sharp absorption edge in the red part of the visible spectrum, and atmospheric methane in extreme thermodynamic disequilibrium. Together, these are strongly suggestive of life on Earth.”
Continue reading Earth can be a model for detecting vegetation on exoplanets
Earth, our beautiful blue planet. It is the third planet from the Sun, but above all, it is our home, the only astronomical object known to harbor life. Here are the best quotes about Earth.
Continue reading Earth Quotes – 10 Best Sayings about Earth
I recently watched the 2017 Russian film “The Spacewalker”. It tells the story of humanity’s first spacewalk. On March 18, 1965, Soviet cosmonaut Alexey Arkhipovich Leonov has stepped out of the Voskhod 2 spacecraft into the void of the space and became the first spacewalker ever.
Continue reading The Spacewalker – Like Apollo 13 but Better
On August 15, 2018, two Russian cosmonauts aboard the International Space Station performed one of the longest spacewalks in the history of space exploration. During the spacewalk lasting 7 hours and 46 minutes, Expedition 56 Flight Engineers Sergey Prokopyev and Oleg Artemyev manually launched four small technology satellites and installed a German-led animal-tracking project named Icarus onto the Russian segment of the space station. Two of the satellites were only the size of tissue boxes.
Continue reading A cosmonaut’s view, just after launching a tiny satellite into the orbit
On June 3, 1965, NASA astronaut Edward Higgins White II (November 14, 1930 – January 27, 1967) made history and executed the United States’ first spacewalk during the Gemini 4 mission. The first US spacewalk lasted 23 minutes, beginning over the Pacific Ocean and ending over the Gulf of Mexico.
Continue reading The First US Spacewalk (June 3, 1965)
NASA has published some interesting statistics about the world’s sandy beaches on Earth Observatory webpage. According to the images taken by Landsat satellites Notes 1 (Landsat 5 and Landsat 8 Notes 2, 3), about 31 percent of the world’s coastlines are sandy. Africa has the highest proportion of sandy beaches (66 percent) and Europe has the lowest (22 percent).
Continue reading NASA Has Published Statistics About the World’s Sandy Beaches
An amazing video of our beautiful Blue Marble from the International Space Station, titled “ISS over New Zealand”, published by the NASA Crew Earth Observations channel.
Continue reading Watch: ISS Over New Zealand
European Space Agency has published an amazing time-lapse video showing the Earth from the International Space Station (ISS). The space agency wrote “Join ESA astronaut Alexander Gerst for a quick flight from the USA to Africa aboard the International Space Station in this time-lapse filmed 12.5 times faster than actual speed.” You can watch that breathtaking video below:
Continue reading Watch: Amazing Time-Lapse Video Showing Earth from the ISS
An island or isle is any piece of sub-continental land that is surrounded by water. It is believed that there are over 100,000 islands in the world. It’s difficult to put a figure to the exact number as there are different kinds of them in various water bodies including oceans, seas, lakes, and rivers. There is even an island within a lake that is situated on an island located in a lake on an island. Only 322 of them are larger than 1000 km2 (386 sq mi). Here are the top 18 largest islands on Earth. Why 18? Because this is the number of islands that have a land area of greater than 100,000 square kilometers (38,610 square miles).
Continue reading Top 18 Largest Islands on Earth
In a video published by the European Space Agency on Twitter, retired American astronaut Scott Kelly describes seeing Earth from space for the first time.
Continue reading Astronaut describes seeing Earth from space for the first time