Help Shape the Future of Space Exploration

Join The Planetary Society Now  arrow.png

Join our eNewsletter for updates & action alerts

    Please leave this field empty
Blogs

Blog Archive

 

Comet PANSTARRS from the other side of the Sun!

Posted by Karl Battams on 2013/03/14 05:21 CDT | 8 comments

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

Read More »

Planetary Society Weekly Hangout: Being WISE about asteroids, comets, and brown dwarfs with Amy Mainzer

Posted by Emily Lakdawalla on 2013/03/14 02:00 CDT

This week I'll be talking with NEOWISE principal investigator Amy Mainzer about moving objects that the WISE mission has spotted both inside and outside our solar system.

Read More »

Will comet Siding Spring make a meteor shower on Mars?

Posted by Emily Lakdawalla on 2013/03/05 04:34 CST | 6 comments

JPL's Solar System Dynamics group shows that there is still a possibility that C/2013 A1 (Siding Spring) could hit Mars. But the uncertainty in its position at that time is large -- the closest approach could happen an hour earlier, or an hour later -- so we're a long way from knowing yet whether it will or (more likely) won't impact.

Read More »

Comet to whiz past Mars in October 2014

Posted by Emily Lakdawalla on 2013/02/27 05:36 CST | 22 comments

A recently discovered comet, C/2013 A1 (Siding Spring), is going to be passing very close to Mars on October 19, 2014. Does it pose a risk to spacecraft?

Read More »

Webcast Tonight! Planetary Scientist and Society President Jim Bell
Watch It Live or Later On Demand

Posted by Mat Kaplan on 2013/02/20 07:59 CST

Professor Bell's topic is "Exploring Mars, the Moon, Asteroids, and Comets with Rovers and Landers," and there is no one better to talk about this subject.

Read More »

Venerable Deep Impact spacecraft has photographed comet ISON

Posted by Emily Lakdawalla on 2013/02/05 05:24 CST | 6 comments

Deep Impact has made the first space-based observations of comet ISON.

Read More »

My ever-popular asteroids-and-comets montage, now in color, with bonus Toutatis

Posted by Emily Lakdawalla on 2012/12/18 04:26 CST | 9 comments

My collage of all the asteroids and comets visited by spacecraft is probably the single most popular image I have ever posted on this blog. I've now updated it to be in color and to include Toutatis.

Read More »

Comet ISON: 30% chance of awesome, 60% chance of that being wrong

Posted by Bill Gray on 2012/09/25 12:15 CDT | 10 comments

A very interesting comet has recently been discovered -- interesting because it will nearly graze the Sun in August 2013 and then approach Earth closely the following December. Whether it will turn out to be a great comet is impossible to know.

Read More »

Hunting Asteroids from a Field in Kansas

Posted by Bruce Betts on 2012/06/15 06:33 CDT

TPS Shoemaker NEO Grant Winner Gary Hug hunts near Earth objects from his back yard in Kansas. NPR's Morning Edition picked up on this fascinating story.

Read More »

What Saturn's moons can tell us about comets (Notes from LPSC 2012)

Posted by Emily Lakdawalla on 2012/04/03 05:20 CDT

My notes on a two-part presentation by collaborators Jim Richardson and David Minton about the sizes of things in the Kuiper belt, a story they told by looking at Saturn's moons. How does that work? What connects Saturn's moons to the Kuiper belt is craters.

Read More »

Lovely Lovejoy pictures

Posted by Emily Lakdawalla on 2011/12/27 10:34 CST

Just a few of the amazing photos of Comet Lovejoy that have been taken from the southern hemisphere over the last few days. Comet Lovejoy is the first Kreutz sungrazer to have been discovered from the ground in 40 years, and after its surprising survival of its passage close to the Sun, it has been putting on a spectacular show in southern skies.

Read More »

A recap of Comet Lovejoy

Posted by Jason Davis on 2011/12/22 10:45 CST | 1 comment

A timeline of one of the most memorable solar events in recent memory: the observations by six Sun-observing spacecraft of Comet Lovejoy making its perihelion passage.

Read More »

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

Posted by Emily Lakdawalla on 2011/12/14 09:37 CST

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

Read More »

Sungrazing with Lovejoy's Comet

Posted by Jason Davis on 2011/12/06 10:42 CST

Observations of the newly sighted Kreutz sungrazer comet C/2011 W3 (Lovejoy) from the ground and from SOHO (a joint NASA/ESA satellite) and STEREO (NASA's Solar Terrestrial Relations Observatory).

Read More »

Brief notes from Day 2 of the DPS-EPSC meeting

Posted by Emily Lakdawalla on 2011/10/04 11:18 CDT

It's been a very full day at the DPS-EPSC 2011 joint meeting. My day was less full than it might have been, because I overslept and missed most of the morning's session. I really needed the rest though so I think it was probably for the best!

Read More »

Meeting today: The infelicitously named "SBAG"

Posted by Emily Lakdawalla on 2011/08/25 01:45 CDT

NASA funds regular meetings of scientists who work on different parts of the solar system to provide scientific input into NASA's future plans. These "analysis groups" are known by their acronyms, all of which sound kind of horrible, but none has quite as terrible-sounding an acronym as "SBAG," usually pronouced "ess-bag," the Small Bodies Assessment Group.

Read More »

Comet Garradd in 3D (sort of)

Posted by Emily Lakdawalla on 2011/08/12 12:52 CDT

Amateur astronomer Patrick Wiggins sent me this neat little animation of comet Garradd moving against background stars through an hour's worth of observing. I'm not any kind of astronomer but if I were I think I would get a kick out of looking at things that appear to move within one night of watching -- asteroids, comets, Jupiter's spots. I'm impatient that way.

Read More »

Rosetta has entered its long sleep

Posted by Emily Lakdawalla on 2011/06/14 12:25 CDT

One big space event that I missed while I was on vacation was Rosetta's entry into hibernation. Rosetta is the biggest interplanetary spacecraft that has been launched by ESA, and it has the groundbreaking goal of entering orbit around a comet and dropping a lander onto it.

Read More »

The scale of our solar system

Posted by Emily Lakdawalla on 2011/05/02 11:26 CDT

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.

Read More »

LPSC 2011: Kirby Runyon on Mars, the Moon, Hartley 2, and Ganymede

Posted by Kirby Runyon on 2011/03/15 01:57 CDT

Kirby Runyon, a second-year grad student at Temple University, offered to send me some writeups of selected presentations from last week's Lunar and Planetary Science Conference, and I enthusiastically agreed.

Read More »

Items 61 - 80 of 105  Previous123456Next
Facebook Twitter Email RSS AddThis

JOIN THE
PLANETARY SOCIETY

Our Curiosity Knows No Bounds!

Become a member of The Planetary Society and together we will create the future of space exploration.

Join Us

Featured Images

NavCam view of comet Churyumov-Gerasimenko on August 31, 2014

South Georgia island
ATV-5 and a waning moon
Moscow at night
More Images

Featured Video

View Larger »

Fly to an Asteroid!

Travel to Bennu on the OSIRIS-REx spacecraft!

Send your name

Join the New Millennium Committee

Let’s invent the future together!

Become a Member

Connect With Us

Facebook! Twitter! Google+ and more…
Continue the conversation with our online community!