TEHRAN (ANA)- NASA has completed the final major test to prepare for the arrival of the first US asteroid sample - slated to land on Earth in September, according to the agency.

TEHRAN (ANA)- Researchers from the University of Warwick have made a new discovery that offers a new small planet formation theory.

TEHRAN (ANA)- University of Arizona researchers have made a new young exoplanet discovery that could explain why spiral arms are produced around its star, and could shed light on planetary formation.

TEHRAN (ANA)- Astronomers using data from NASA's Hubble Space Telescope and other observatories have uncovered a link between Neptune's disappearing clouds and the Sun's 11-year solar cycle.

TEHRAN (ANA)- An international team of astronomers led by the Weizmann Institute of Science (WIS) has discovered a hot Jupiter with an extreme temperature difference between its two sides.

TEHRAN (ANA)- Planetary scientists at the ETH Zurich now know how thick the Martian crust is, thanks to the strongest Marsquake ever observed.

TEHRAN (ANA)- A polar cyclone has been spotted at the Uranus’ north pole, researchers at the Jet Propulsion Laboratory in Pasadena, California, reported.

TEHRAN (ANA)- Star cluster M92, a densely packed ball of stars roughly 27,000 light-years from Earth, is about 13.8 billion years old, scientists at the University of Texas found.

TEHRAN (ANA)- NASA's Hubble Space Telescope has spotted a galaxy about 50 million light-years away that holds some surprises, the agency said.

TEHRAN (ANA)- Scientists at the University of California used an unprecedented technique to detect that levels of helium are rising in the atmosphere, resolving an issue that has lingered among atmospheric chemists for decades.