Heavens

Rocky mounds and a plateau on Mars

Rocky mounds and a plateau on Mars

When Mars Express set sail for the crater named after Portuguese navigator Ferdinand Magellan, it found a windblown plateau and mysterious rocky mounds nearby.

Expecting Tropical Depression Alex in the Caribbean

Expecting Tropical Depression Alex in the Caribbean

Forecasters on June 25 had given System 93L in the western Caribbean an 80 percent chance of developing into Tropical Depression Alex, and weekends seem to always birth tropical depressions. The GOES-13 satellite captured a visible image of both System 93L and a second low east of the Leeward Islands that has a much lesser chance of development this weekend.

NASA infrared imagery shows well-defined eye in Category 5 Celia

NASA infrared imagery shows well-defined eye in Category 5 Celia

Celia has exploded into a monster hurricane in the Eastern Pacific, and is now a Category 5 storm over open waters. NASA's Aqua satellite captured an infrared image (that shows temperature) of Celia's clouds and clearly shows an eye in the storm. Celia's eye appears well-defined and is between 15-20 nautical miles wide.

Deep Impact spacecraft on way to Hartley 2 comet

Deep Impact spacecraft on way to Hartley 2 comet

COLLEGE PARK, Md. -- On Sunday, NASA's historic Deep Impact spacecraft will fly past Earth for the fifth and last time on its current University of Maryland-led EPOXI mission. At time of closest approach to Earth, the spacecraft will be about 30,400 kilometers (18,900 miles) above the South Atlantic.

Life on Mars? Wet era was global

Life on Mars?  Wet era was global

Conditions favourable to life may once have existed all over Mars. Detailed studies of minerals found inside craters show that liquid water was widespread, not only in the southern highlands, but also beneath the northern plains.

NASA infrared imagery hinted Darby would become a hurricane

NASA infrared imagery hinted Darby would become a hurricane

Infrared imagery provides forecasters with a look at the temperature of cloud tops in tropical cyclones, sea surface and land surface temperatures and more. NASA infrared imagery from the morning of June 24 revealed that Darby had strong convection that is an indicator of a strengthening storm. Tropical Storm Darby became the second hurricane of the Eastern Pacific Ocean season this morning.

Team finds widespread glacial meltwater valleys on Mars

Team finds widespread glacial meltwater valleys on Mars

PROVIDENCE, R.I. [Brown University] — Planetary scientists have uncovered telltale signs of water on Mars — frozen and liquid — in the earliest period of the Red Planet's history. A new claim, made public this month, is that a deep ocean covered some of the northern latitudes.

Venus may have once been a habitable planet

Venus may have once been a habitable planet

ESA's Venus Express is helping planetary scientists investigate whether Venus once had oceans. If it did, it may even have begun its existence as a habitable planet similar to Earth.

New 'fix' for cosmic clocks could help uncover ripples in space-time

An international team of scientists including University of British Columbia astronomer Ingrid Stairs has discovered a promising way to fine-tune pulsars into the best precision time-pieces in the Universe.

Timely technology sees tiny transitions

Scientists can detect the movements of single molecules by using fluorescent tags or by pulling them in delicate force measurements, but only for a few minutes. A new technique by Rice University researchers will allow them to track single molecules without modifying them -- and it works over longer timescales.