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Comet PANSTARRS from the other side of the Sun!

Karl Battams • March 14, 2013

Comet PANSTARRS is delighting northern hemisphere viewers right now. But it's also big, bright, and beautiful to the STEREO spacecraft.

Curiosity catches sunspots along with Phobos and Deimos transits

Emily Lakdawalla • October 03, 2012

Curiosity has been shooting photos of the Sun as Phobos and Deimos cross its face, and -- as far as I can tell -- captured sunspots as well.

Not Necessarily Your Last Venus Transit!

Jim Bell • June 04, 2012

Unless you are lucky and healthy enough to live for another 105 years, tomorrow will be your last chance to see a Venus transit from the surface of the Earth. But this need not be the last transit of Venus that you will ever see.

Transit of Venus June 5: Why Should You Care and How to Observe

Bruce Betts • June 02, 2012

A rare astronomical event occurs June 5/6. Find out why you should care and how to observe it.

Making eclipse magic

Emily Lakdawalla • May 16, 2012

How to enjoy a solar eclipse with your kids, making shadow magic with a pinhole viewer.

Cool video: Jupiter, its moons, a comet, and...the Sun?

Emily Lakdawalla • May 16, 2012

Here's a neat video posted by SungrazerComets (the Twitter identity of the U.S. Naval Research Laboratory's Sungrazing Comets website) this morning.

"False-tonal recording?" The sounds of a coronal mass ejection

Emily Lakdawalla • March 15, 2012

A new "sonification" of the recent solar storm by Robert Alexander (a University of Michigan graduate student), employing data from the MESSENGER and SOHO spacecraft.

Solar storm in progress

Emily Lakdawalla • March 07, 2012

Last night the Sun unleashed a large coronal mass ejection in our direction. Here is a compilation of images from SOHO's two LASCO cameras, plus a prediction from the new space weather prediction model that I learned about at the American Geophysical Union in December. The storm will arrive at Earth on March 8.

Solar flares from Skylab

Jason Davis • January 26, 2012

Before automated space observatories like SDO could send pictures and videos of solar phenomenon in real-time, humans had to do it manually, as in the case of the groundbreaking Skylab space station missions, which featured the Apollo Telescope Mount.

Video: Comet Lovejoy entered SOHO's LASCO C3 field of view this morning!

Emily Lakdawalla • December 14, 2011

An animation of comet Lovejoy entering the field of view of one of SOHO's Sun-monitoring cameras.

Good news, everyone: We're getting as good at space weather forecasts as we are at Earth weather forecasts

Emily Lakdawalla • December 06, 2011

Emily reports from the Fall 2011 American Geophyisical Union meeting about advancements in space weather prediction.

From the 2011 Fall Meeting of the American Geophysical Union (AGU): Voyager 1 at the edge of the solar system

Emily Lakdawalla • December 05, 2011

A report on a press briefing about Voyager 1 at the Fall 2011 American Geophyisical Union meeting. The spacecraft has entered a new region between our solar system and interstellar space, which scientists are calling the stagnation region.

The scale of our solar system

Emily Lakdawalla • May 02, 2011

Space.com has taken advantage of the infinitely scrollable nature of Web pages to produce a really cool infographic on the scales of orbital distances in the solar system.

Spotting Jupiter's Moons...with a Solar Telescope!?

Emily Lakdawalla • April 06, 2011

I was astounded to learn this morning that SOHO can not only see Jupiter, it can actually resolve Jupiter's moons (at least its two outer ones) as points of light separate from their planet!

Mars conjunction today: Cool SOHO/SDO video

Emily Lakdawalla • February 04, 2011

Today Mars made its closest approach to the Sun -- as seen from Earth, that is. Why is this important?

Solar eclipses from space: Hinode and SDO

Emily Lakdawalla • January 06, 2011

Two spacecraft that keep their ever-watchful eyes on the Sun -- NASA's Solar Dynamics Observatory (SDO) and JAXA's Hinode -- were doing their thing, when something large wandered past: the Moon.

A Martian Moment in Time, revisited

Emily Lakdawalla • May 12, 2010

A good start to my day today: The New York Times' Lens Blog featured the "Martian Moment in Time" photo that Opportunity took last week in a really nice writeup. I'm so grateful, and still a little surprised, that the folks on the Mars Exploration Rover mission took this idea and ran with it!

What it looks like when a CME explodes toward us

Emily Lakdawalla • April 14, 2010

The animation I posted yesterday, of a huge coronal mass ejection exploding away from the Sun, caused several people to ask if it could do Earth any harm.

Stellar explosion

Emily Lakdawalla • April 13, 2010

The Sun just spat out a huge coronal mass ejection, an event made visible by the watchful cameras on SOHO.

Strong geomagnetic storm today

Emily Lakdawalla • April 05, 2010

This morning I received a bulletin warning of a "strong" geomagnetic storm that began just over an hour ago.

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