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Category: Science

Voyager 1 Fires Up Thrusters After 37 Years

An artist concept depicting one of the twin Voyager spacecraft.

The Voyager team is able to use a set of four backup thrusters, dormant since 1980. They are located on the back side of the spacecraft in this orientation. Credit: NASA/JPL-Caltech

On Tuesday, Nov. 28, 2017, Voyager engineers fired up the four TCM thrusters for the first time in 37 years and tested their ability to orient the spacecraft using 10-millisecond pulses. The team waited eagerly as the test results traveled through space, taking 19 hours and 35 minutes to reach an antenna in Goldstone, California, that is part of NASA’s Deep Space Network.

via Voyager 1 Fires Up Thrusters After 37 Years

Is This the Easiest Way to Change the World?

Feel like helping people but don’t have the time, money, or energy? Well, there’s an app for that. Or rather, there are several. From something as simple as opening a tab to playing some games, here’s how to help.

Source: Is This the Easiest Way to Change the World?

Living in space has drastic, negative effects on the brain

As we move further and further from our planet and begin exploring space, we need to know that we can survive and function during these long trips in zero-g. Astronauts would need to live outside Earth’s gravity for three years on a trip to Mars — three to six months each way, plus two years waiting for the planets to align favorably once again. Mars has some gravity, but it’s approximately 1/3 that of the Earth’s. We need to understand how living in that kind of environment for an extended period of time will affect astronauts, and how they can mitigate any effects on their bodies and neural function.

Are we really an interstellar species? Can we even survive a Mars trip, let alone staying there a while longer?

Source: Living in space has drastic, negative effects on the brain

Asteroid that barely missed Earth this week could wreak havoc in the not-so-distant future

TC4 came so close to Earth this time around that it was nearly within the orbit of many of our satellites, and just a fraction of the distance between Earth and the Moon. Based on current models forecasting its path, the rock will perform another near-miss in 2050, and we should be safe for that event, but its return in 2079 is giving scientists a reason to worry.

Source: Asteroid that barely missed Earth this week could wreak havoc in the not-so-distant future – BGR