Get the latest news in earth science, heliophysics, astrophysics and planetary science from NASA's Science Mission Directorate.

Impacts have shaped the Earth and Moon since early in the history of the solar system. In fact, the Moon was likely formed when a planetoid the size of Mars crashed into the Earth over 4.5 billion years ago.

Groundwater beneath northern India’s farms and cities has been disappearing. Hydrologists, like NASA's Matt Rodell, have been hunting for it.

The discovery of dark energy, a mysterious force that is accelerating the expansion of the universe, was based on observations of type 1a supernovae, and these stellar explosions have long been used as "standard candles" for measuring the expansion.

The oblique view highlights interesting exposures of geological strata in the steep walls of the crater, difficult to see from straight overhead.

A new supercomputer simulation designed to track the fate of the universe's first black holes finds that, counter to expectations, they couldn't efficiently gorge themselves on nearby gas.

New research shows that stars of varying ages could have profound consequences for the development of emerging life forms. Newly formed stars spin faster than midde-aged stars, generating strong magnetic fields and emitting more intense radiation. This could have a dramatic effect on any life developing is such systems.

Planet hunters from the UK have discovered the largest exoplanet yet, and its uniqueness doesn't end there. Dubbed WASP-17, this extra large world is twice the size of Jupiter but is super-lightweight, "as dense as expanded polystyrene" one astronomer said.

NASA's Mars Rover Opportunity is investigating a metallic meteorite the size of a large watermelon that is providing researchers more details about the Red Planet's environmental history.

Though its winds were not particularly powerful when it made landfall in Tawian, slow-moving Typhoon Morakot soaked the southern part of the island with heavy rain between August 3 and 9, 2009.