Magazine

Galaxies, Science

How do you measure the rotational speed of a galaxy, taking into consideration the motion of our galaxy, solar system, planet, etc.?

Observing, Planets

Saturn takes center stage

Observing

Check out the Big Dipper!

Human Spaceflight

I’ve read that the planned crewed Mars missions will take six months or two years to arrive. Which is it? could a longer trip be due to the heavy payload? Our rovers took only eight to nine months to arrive.

Observing

Narnia fading

Science

Satellite ‘fake out’

Observing

How large does the Sun appear from Mercury and Venus, as compared to how we see it from Earth?

Observing

Spin cycles

Solar System

Does Titan experience any tides in its oceans, or is it tidally locked with no tides?

Human Spaceflight

NASA Administrator Reflects on Legacy Record-Breaking Skylab, Apollo Astronaut

Science

Astronomy Backstage Pass: Chicago

Science

GRACE-FO Spacecraft Ready to Launch