NASA used satellite data to tally the rainfall generated by Hurricanes Hilary and Irwin as they interacted in the Eastern Pacific Ocean.

NASA’s Aqua satellite passed over Typhoon Nesat as the storm continued moving north toward Taiwan.   

NASA’s Aqua satellite provided infrared imagery Hurricane Hilary that showed it weakening. Within 12 hours the storm weakened to a tropical storm.

NASA-NOAA's Suomi NPP satellite captured an image of Hurricane Hilary as it continued to strengthen. The National Hurricane Center expects Hilary to become a major hurricane on July 27.

Tropical Storm Greg appears to be less-rounded and more elongated on satellite imagery from NOAA's GOES-West satellite. Greg is still over 1,500 miles east of Hawaii.

Earlier this year Arctic sea ice sank to a record low wintertime extent for the third straight year. Now NASA is flying a set of instruments north of Greenland to observe the impact of the melt season on the Arctic's oldest and thickest sea ice.

Tropical Storm Don didn't live long before it weakened to a remnant low pressure area in the North Atlantic Ocean. Before it weakened NASA-NOAA's Suomi NPP satellite captured a visible image of the storm on its approach to the Windward Islands. The GPM satellite analyzed the storm's rainfall as it developed and moderate to heavy…

For the past eight years, Operation IceBridge, a NASA mission that conducts aerial surveys of polar ice, has produced unprecedented three-dimensional views of Arctic and Antarctic ice sheets, providing scientists with valuable data on how polar ice is changing in a warming world. Now, for the first time, the campaign will expand its reach to…

Tropical Cyclone Enawo was battering the northeastern region of Madagascar when NASA-NOAA's Suomi NPP satellite passed overhead on March 7. Enawo strengthened to the equivalent of a Category 4 or major hurricane and made landfall.

NASA’s Fermi Gamma-ray Space Telescope has found a signal at the center of the neighboring Andromeda galaxy that could indicate the presence of the mysterious stuff known as dark matter. The gamma-ray signal is similar to one seen by Fermi at the center of our own Milky Way galaxy.