Self-Motivation
David Goggins
Former Navy Seal
Career Development
Bryan Cranston
Actor
Critical Thinking
Liv Boeree
International Poker Champion
Emotional Intelligence
Amaryllis Fox
Former CIA Clandestine Operative
Management
Chris Hadfield
Retired Canadian Astronaut & Author
Learn
from the world's big
thinkers
Start Learning

NASA’s InSight successfully lands on Mars

The unmanned lander will help scientists learn more about the interior of Mars and the development of rocky planets.

NASA
  • The unmanned spacecraft touched down on Mars without problems shortly before 3 p.m. ET on Monday.
  • It was a precarious landing that NASA engineers had described as "seven minutes of terror."
  • InSight will study the interior of Mars, and could help scientists discover the presence of liquid water on the red planet.

NASA's InSight—a robotic lander designed to study the interior of rocky planets—successfully landed on Mars Monday afternoon, marking the agency's eighth successful deployment of a spacecraft on the red planet.

It was a precarious landing process that NASA engineers predicted would be "seven minutes of terror."

"This vehicle is very, very complicated," Rob Grover, InSight's entry, descent and landing (EDL) lead, during a NASA live stream on Monday. "It uses 12 engines, each of those engines are pulsed 10 times a second, producing these little tiny impulses, almost like little bullets that keep the vehicle going at a constant velocity as it approaches the ground."

Grover said the agency had to rely on an algorithm to guide the unmanned lander to the surface.

"We can't joystick the landing, so we have to rely on the commands we pre-program into the spacecraft. We've spent years testing our plans, learning from other Mars landings and studying all the conditions Mars can throw at us," Grover said in a recent statement.

The practice paid off. A few minutes before 3 p.m., the mission control room erupted in cheers as "touchdown confirmed!" played over the speakers.

"This is what we really hoped and imagined in our mind's eye," Grover said, adding that engineers still have to check the data to confirm how smoothly the landing really was.

After making the 300-million-mile voyage from Earth, InSight landed at a site called Elysium Planitia, a flat plain on Mars's equator about 370 miles from where Curiosity touched down in August 2012. The mission, led by NASA's Jet Propulsion Laboratory, aims is to help scientists learn more about the early development of rocky planets, and possibly discover the presence of liquid water on Mars.

"The lander uses cutting edge instruments, to delve deep beneath the surface and seek the fingerprints of the processes that formed the terrestrial planets," NASA wrote on its website. "It does so by measuring the planet's "vital signs": its "pulse" (seismology), "temperature" (heat flow), and "reflexes" (precision tracking)."

InSight was followed to Mars by two tiny experimental satellites, dubbed CubeSats, whose primary purpose was to relay radio transmissions from the lander back to Earth. NASA officials said it would take months before they start obtaining the "best data" from InSight.

The “new normal” paradox: What COVID-19 has revealed about higher education

Higher education faces challenges that are unlike any other industry. What path will ASU, and universities like ASU, take in a post-COVID world?

Photo: Luis Robayo/AFP via Getty Images
Sponsored by Charles Koch Foundation
  • Everywhere you turn, the idea that coronavirus has brought on a "new normal" is present and true. But for higher education, COVID-19 exposes a long list of pernicious old problems more than it presents new problems.
  • It was widely known, yet ignored, that digital instruction must be embraced. When combined with traditional, in-person teaching, it can enhance student learning outcomes at scale.
  • COVID-19 has forced institutions to understand that far too many higher education outcomes are determined by a student's family income, and in the context of COVID-19 this means that lower-income students, first-generation students and students of color will be disproportionately afflicted.
Keep reading Show less

Masturbation boosts your immune system, helping you fight off infection and illness

Can an orgasm a day really keep the doctor away?

Sexual arousal and orgasm increase the number of white blood cells in the body, making it easier to fight infection and illness.

Image by Yurchanka Siarhei on Shutterstock
Sex & Relationships
  • Achieving orgasm through masturbation provides a rush of feel-good hormones (such as dopamine, serotonin and oxytocin) and can re-balance our levels of cortisol (a stress-inducing hormone). This helps our immune system function at a higher level.
  • The surge in "feel-good" hormones also promotes a more relaxed and calm state of being, making it easier to achieve restful sleep, which is a critical part in maintaining a high-functioning immune system.
  • Just as bad habits can slow your immune system, positive habits (such as a healthy sleep schedule and active sex life) can help boost your immune system which can prevent you from becoming sick.
Keep reading Show less

Live on Tuesday | Personal finance in the COVID-19 era

Sallie Krawcheck and Bob Kulhan will be talking money, jobs, and how the pandemic will disproportionally affect women's finances.

How DNA revealed the woolly mammoth's fate – and what it teaches us today

Scientists uncovered the secrets of what drove some of the world's last remaining woolly mammoths to extinction.

Ethan Miller/Getty Images
Surprising Science

Every summer, children on the Alaskan island of St Paul cool down in Lake Hill, a crater lake in an extinct volcano – unaware of the mysteries that lie beneath.

Keep reading Show less
Scroll down to load more…
Quantcast