قالب وردپرس درنا توس
Home / Science (page 5)

Science

Gravitational waves will settle cosmic conundrum

When neutron stars collide, they emit light and gravitational waves, as seen in this artist's illustration. By comparing the times of the two emissions of many different neutron star fusions, researchers can measure the expansion velocity of the universe. Credit: R. Hurt / Caltech-JPL Measurements of gravitational waves from about 50 binary neutron stars in the next decade will definitely …

Read More »

Photos from NASA’s lost Opportunity

This week, NASA bid farewell to Opportunity, a rover that wandered on the surface of Mars for almost 15 years before being silenced by a sandstorm involving the planet last summer. Over the years, the rover has hit many milestones, including completing a marathon. Its engineers have managed to keep it running through the standard risks of Mars, such as …

Read More »

Want a better idea of your future climate? Try this map

In the absence of a time machine, it is hard to really understand how the future climate will be. The numbers of climate projections contain a lot of information, but these numbers may seem abstract – how does the 2.5 ° warmer actually show up? A way to understand that the information is to get in the car (even if …

Read More »

This Walking Robot Navigates Using the Sun, No GPS Required

Top left, a Cataglyphis desert ant; bottom left, the Australian desert ant Melophorus bagoti ; right, the AntBot. Image: Dupeyroux, et al (Science Robotics) Researchers in France call their "AntBot" six-legged creation. This 9-inch robot does not just move like a desert but also, borrows their unique navigation skills. These skills, presented in a new study published in Science Robotics …

Read More »

Study unfolds a new class of mechanical devices

Professor Larry Howell demonstrates the motion on a developmental mechanism. Credit: BYU It took just over 10 years, but the real science has finally reached the science fiction of Iron Man's transforming exoskeleton costume. In an article published today on Science Robotics Brigham Young University engineers describe a new technology that allows them to construct complex mechanisms outside a structure …

Read More »

‘Old’ sperm produces healthier offspring

Sperm that lives longer before fertilizing an egg produces healthier offspring, according to new research from the University of East Anglia and the University of Uppsala in Sweden. New research published today shows that the most long-lived sperm in a ejaculate of a zebrafish male produces offspring with longer and healthier lifespans – which in turn produce more and healthier …

Read More »

Hungry Deer May Be Changing How Things Sound In The Forest : NPR

A white-tailed deer keeps his ears open while grazing in South Hero, Vt. Rob Swanson / AP hide caption activate the caption Rob Swanson / AP A white-tailed deer keeps his ears open while grazing in South Hero, Vt. Rob Swanson / AP Hungry deer in the northeastern United States is likely to change the acoustics of their forests by …

Read More »

SpaceX calls ULA NASA launch contract “vastly” overpriced in official protest

SpaceX presented an official protest to the Government Accountability Office (GAO) after NASA awarded the competitor United Launch Alliance a launch contract for Lucy, an interplanetary spacecraft designed to explore a belt of unique asteroids grouped around the orbital swath of Jupiter. [19659002] Announced on January 31, SpaceX believes that NASA made a decision against the best interests of the …

Read More »