The Red Planet Hasn’t Looked This Good in Years

The entire universe in blog form
April 10 2014 7:45 AM

Mars at Its Best Right Now

Mars
Mars glows like a red demon's eye in the sky right now.

Photo by Christian Fröschlin, from the video

Due to the orbital dance of the planets, Mars is currently at its best showing of the year, as close to Earth as it gets, and shining brightly all night long.

Phil Plait Phil Plait

Phil Plait writes Slate’s Bad Astronomy blog and is an astronomer, public speaker, science evangelizer, and author of Death From the Skies!  

To see it, go outside. If it’s after sunset and the sky is dark, face southeast. Look up. There it is. It’s one of the brightest objects in the sky and shines with an orange-y glow.

Advertisement

The technical term for Mars’ place in the sky right now is opposition because it is opposite (literally, 180° around the sky) from the Sun. The Sun sets in the west, so after sunset look east. At midnight, when the Sun is lowest, Mars is at its highest. And closer to dawn as the Sun begins to rise in the east Mars will be sinking in the west.

orbits of Mars and Earth
The orbits of the inner planets as of April 9, 2014. Earth (blue) and Mars (red) are indicated, and they form a straight line with the Sun.

Diagram by Heavens-Above

This also means the Red Planet is as close to our own blue-green one as it gets for a couple of years, so it’s the best time to observe it. Mars is only half the size of the Earth, and more than 90 million kilometers (55 million miles) away, so it’s still rather small through a telescope. Despite that, astrophotographer Christian Fröschlin used his Celestron 8” telescope to observe Mars on April 9, 2014, creating enough images to string together into this amazing video:

Coooool. You can actually see the planet rotate! Mars spins once on its axis in a very Earth-like time of about 24.5 hours (what planetary scientists call a sol to distinguish it from an Earth day), so you’re seeing roughly 1/8th of a sol here. It’s currently summer in the Martian northern hemisphere, so that half of the planet is tipped toward the Sun; that means you’re seeing the north polar ice cap in the video. You can see a bunch more recent images taken of Mars over at Universe Today.

Mars isn’t far from the somewhat fainter orange giant star Arcturus in the sky, and it’s fun to compare them. Also, on Sunday and Monday the full Moon will be only a few degrees away, so that’ll make a good photo op.

If you have clear skies, get outside and look up! The Universe awaits.

Correction, April 10, 2014: Due to a typo I originally listed the distance to Mars as 45 million miles. It is actually 55 million.

Phil Plait writes Slate’s Bad Astronomy blog and is an astronomer, public speaker, science evangelizer, and author of Death From the Skies!  

TODAY IN SLATE

Politics

Blacks Don’t Have a Corporal Punishment Problem

Americans do. But when blacks exhibit the same behaviors as others, it becomes part of a greater black pathology. 

I Bought the Huge iPhone. I’m Already Thinking of Returning It.

Scotland Is Just the Beginning. Expect More Political Earthquakes in Europe.

Lifetime Didn’t Think the Steubenville Rape Case Was Dramatic Enough

So they added a little self-immolation.

Two Damn Good, Very Different Movies About Soldiers Returning From War

Medical Examiner

The Most Terrifying Thing About Ebola 

The disease threatens humanity by preying on humanity.

Students Aren’t Going to College Football Games as Much Anymore, and Schools Are Getting Worried

The Good Wife Is Cynical, Thrilling, and Grown-Up. It’s Also TV’s Best Drama.

  News & Politics
Weigel
Sept. 19 2014 9:15 PM Chris Christie, Better Than Ever
  Business
Moneybox
Sept. 19 2014 6:35 PM Pabst Blue Ribbon is Being Sold to the Russians, Was So Over Anyway
  Life
Inside Higher Ed
Sept. 19 2014 1:34 PM Empty Seats, Fewer Donors? College football isn’t attracting the audience it used to.
  Double X
The XX Factor
Sept. 19 2014 4:58 PM Steubenville Gets the Lifetime Treatment (And a Cheerleader Erupts Into Flames)
  Slate Plus
Slate Picks
Sept. 19 2014 12:00 PM What Happened at Slate This Week? The Slatest editor tells us to read well-informed skepticism, media criticism, and more.
  Arts
Brow Beat
Sept. 19 2014 4:48 PM You Should Be Listening to Sbtrkt
  Technology
Future Tense
Sept. 19 2014 6:31 PM The One Big Problem With the Enormous New iPhone
  Health & Science
Medical Examiner
Sept. 19 2014 5:09 PM Did America Get Fat by Drinking Diet Soda?   A high-profile study points the finger at artificial sweeteners.
  Sports
Sports Nut
Sept. 18 2014 11:42 AM Grandmaster Clash One of the most amazing feats in chess history just happened, and no one noticed.