Early microbes probably used this gas to survive in an oxygen-deprived Earth.
Scientists came to this conclusion after analyzing the evolutionary history of as many as 299 species of aquatic animals.
Both missions are slated to reach their destinations by the end of 2018.
Scientists analyzed an ancient cave rock to detect signs of rapid polarity transitions in Earth's history.
Moon's surface is covered with fine, grey-colored particles of dust and scientists think it could be an appropriate source of material for building lunar habitats.
The presence of ice was confirmed with the help of data captured by NASA's Moon Mineralogy Mapper, an instrument that flew on ISRO's Chandrayaan-1.
The cemetery reveals details about eastern Africa's first herders and how it brought people together.
The micro-plastics resulting from these lenses could enter land and water-based ecosystems and harm animal life.
Deep-sea hagfish secretes its own sticky slime to protect itself from underwater predators.
Scientists used data from Kepler Space Telescope and Gaia satellite to determine which exoplanets could have water.
According to the research, these fossils are now ranked among the oldest evidence of life on Earth.
The image is 14 times larger than the one captured by Hubble nearly four years ago.
The motion of small probes around an asteroid could provide information regarding its weight.
A recent review by the Department of Defense's inspector general office revealed security flaws that could be exploited to compromise the nation's four critical space systems.
The black hole is just as big as the one found at the center of our Milky Way galaxy.
Scientists have called on industry experts to establish necessary safeguards to keep children from being tended toward machines.
The supposedly abnormal behavior of the satellite comes into notice as the U.S. moves ahead with a plan to establish its own Space Force.
The agency also plans missions to the Moon and Mars in coming years.
NASA's Parker Solar Probe will fly through sun's corona faster than any other spacecraft in history and provide crucial insight into solar wind and other stellar properties.
These collisions can disperse light over vast distances, providing food for massive galaxies like the Milky Way.
The plan comes as China and Russia continue to advance their hypersonic weapon arsenal.
The cluster could have a plethora of planets in the potentially habitable zone, but the arrangement of stars in the region could create problems for the existence of life.
Researchers from different parts of the world presented studies highlighting potential benefits from psychedelic drugs, including LSD and MDMA.
Scientists also found modern-day shark teeth that probably got dislodged when they fed on the mega shark.
The technologies will support the agency's future space missions to Moon, Mars, and beyond.
This is the first early Stone Age settlement to be discovered under Finnish waters.
The organization of gases making up this nebular is completely the opposite of what is normally observed.
The novel soft-robot was created with a new hybrid fabrication technique.
The galaxy was first observed by the Giant Meter Wave Radio Telescope in India.
The exoplanets were discovered using a series of observations from different telescopes, while Ryugu was photographed by JAXA's Hayabusa2 spacecraft.