Tag Archives: closest earth

Comet NEOWISE (i.e., C/2020 F3): Next 3 Days, The Best; Closest To Earth On Thursday, July 23, 2020.

by Anura Guruge

Click to ENLARGE.

From my BOOK (of course) — see below.

Quite literally a HEADS UP. Weather, at least in New Hampshire, is always a factor. So, get out there. Do NOT WAIT for Thursday. Only takes ONE cloud as we have found out. SMILE.

I am going out, right after I post this. Seen it twice — three will be better, four a TREAT.

Enjoy. I am so happy I got to see it. Enjoy. We might not get another for another 23-years!

Click to check the book out.

Related posts:
Search ‘NEOWISE.

by Anura Guruge


Comet, 45P, Will Make 17th Closest (Known) Earth-Comet Encounter On February 11, 2017.

by Anura Guruge

Click to ENLARGE.


Nothing to get too excited about. For a start, this same comet, 45P (where the ‘P’ indicates that it is ‘periodic’), flew by, even closer in 2011.

7.72 million mile separation is pretty respectable — 32x GREATER than the distance to the Moon.

So, don’t panic. Plus, it is quite a small comet, maybe a MILE across, max.

You may hear in the media that this the 8th closest approach by a comet. That is 8th closest as of 1950s when we really got good at measuring these distances — and you have to ALWAYS add, ‘KNOWN’.

This comet, 45P, even at this distance is unlikely to be naked eye visible!

So think of all the comet flybys our ancestors would have been oblivious to.

Also remember we are talking comets. Asteroids routinely whiz by much closer — as say did 2000EM26 in February 2014, with just 2.1 million mile separation.

Related posts:
++++ Check Category ‘astronomy’ >>>>
Search ‘comets for posts from prior years >>>>

by Anura Guruge