segunda-feira, 3 de abril de 2017

Moore's Law and The Secret World Of Ones And Zeroes

Mosquito flight is unlike that of any other insect

The buzzing bloodsuckers flap their long wings in narrow strokes really, really fast — more than 800 times per second in males. That’s four times faster than similarly sized insects. “The incredibly high wingbeat frequency of mosquitoes is simply mind-boggling,” says David Lentink, who studies flight at Stanford University.
Mosquitoes mostly hover. Still, it takes a lot of oomph and some unorthodox techniques to fly that slowly. Mosquitoes manage to stay aloft thanks primarily to two novel ways to generate lift when they rotate their wings , Richard Bomphrey and colleagues write March 29 in Nature. The insects essentially recycle the energy from the wake of a preceding wing stroke and then tightly rotate their wings to remain in flight. Read more.

Água na Lua?

segunda-feira, 13 de fevereiro de 2017

The International Space Station is How Big?!

2017 Underwater Photographer of the Year

Does Hot Water Freeze Faster Than Cold Water?

7 Things We Don't Know About the Ocean

sábado, 10 de dezembro de 2016

John Glenn

John Glenn, o primeiro norte-americano a orbitar em torno da Terra, tornou-se símbolo de patriotismo e perseverança. O último sobrevivente dos pioneiros da era do espaço morreu esta quinta-feira. A história dele é uma lenda.

Indestructible Coating?!

All ESEA training activities are specifically designed for teaching professionals in STEM disciplines (Science, Technology, Engineering, and Mathematics). The common objectives of ESEA training activities are to introduce teachers to implementing inquire based science education, as well as resource based and project-based teaching approaches.
2016 training activities here.

Create your own astro-music

Create your own music inspired by images of space (activity by Matthew Whitehouse, South Carolina State Museum)

Be a Cassini Scientist for a day

 The 'Cassini Scientist for a Day' competition returns for a 2016/2017 edition. The competition is designed to give the participants a taste of life as a space scientist. Students are invited to submit a 500-word essay explaining their choice of one of three targets imaged by the Cassini spacecraft, in orbit around Saturn, over the past few years.
Be a Cassini Scientist for a day
To enter the competition, school students (10 –18 years old) from participating countries need to find out as much as possible about the beautiful planet Saturn, its fascinating features, and mysterious moons. Students must then choose one of the three targets imaged by Cassini and write an essay to justify their choice to a panel of experts.

The closing date for the competition in these countries is 23:59 CEST, 3 April 2017. More.

Cassini beams back first images from new orbit

Silly putty makes seriously state-of-the-art sensors

Silly putty is more than just child’s play, according to a new paper – it's a key ingredient in a motion sensor precise enough to detect a spider’s tiny footprints.
Conor Boland, a nanophysicist at Trinity College Dublin in Ireland, and colleagues combined the popular children’s play-goo with graphene: single layers of pure carbon atoms bonded in a honeycomb formation. The result, dubbed “G-Putty”, was unveiled in Science.