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The Brachistochrone Problem

Last post by notFritzArgelander « Thu Aug 13, 2020 3:21 am

by notFritzArgelander » Thu Aug 13, 2020 3:21 am

This was a problem proposed by Johann Bernoulli in 1696. The problem was published asking other mathematicians of the day to find the curve of...

0 Replies

7 Views

Last post by notFritzArgelander
Thu Aug 13, 2020 3:21 am
TESS completes primary mission

Last post by notFritzArgelander « Thu Aug 13, 2020 12:25 am
Replies: 3
by notFritzArgelander » Wed Aug 12, 2020 3:50 pm

3 Replies

19 Views

Last post by notFritzArgelander
Thu Aug 13, 2020 12:25 am
SWaB: time isn't just another dimension

Last post by notFritzArgelander « Thu Aug 13, 2020 12:19 am
Replies: 5
by notFritzArgelander » Wed Aug 12, 2020 4:33 pm

5 Replies

74 Views

Last post by notFritzArgelander
Thu Aug 13, 2020 12:19 am
Sunflower galaxy's ultra luminous X-ray source studied

Last post by Juno16 « Wed Aug 12, 2020 9:35 pm
Replies: 2
by notFritzArgelander » Wed Aug 12, 2020 3:59 pm

2 Replies

19 Views

Last post by Juno16
Wed Aug 12, 2020 9:35 pm
AAS: "Formalde-hyde and Seek"

Last post by helicon « Wed Aug 12, 2020 9:28 pm
Replies: 1
by notFritzArgelander » Wed Aug 12, 2020 2:01 am

First post

The title is too aptly descriptive and humorous to modify....

Last post

I agree. Perfect title for the article.

1 Replies

25 Views

Last post by helicon
Wed Aug 12, 2020 9:28 pm
SWaB: only 300 million years left for Saturn's rings

Last post by Michael131313 « Wed Aug 12, 2020 6:44 pm
Replies: 3
by notFritzArgelander » Tue Aug 11, 2020 2:52 am

3 Replies

44 Views

Last post by Michael131313
Wed Aug 12, 2020 6:44 pm
12 billion year old galaxy NOT chaotic

Last post by Michael131313 « Wed Aug 12, 2020 6:28 pm
Replies: 1
by notFritzArgelander » Wed Aug 12, 2020 4:02 pm

1 Replies

24 Views

Last post by Michael131313
Wed Aug 12, 2020 6:28 pm
episodic star formation in dwarf galaxies

Last post by notFritzArgelander « Wed Aug 12, 2020 3:54 pm

by notFritzArgelander » Wed Aug 12, 2020 3:54 pm

0 Replies

7 Views

Last post by notFritzArgelander
Wed Aug 12, 2020 3:54 pm
Ceres is an ocean world, astrobiology implications

Last post by notFritzArgelander « Wed Aug 12, 2020 3:11 pm
Replies: 9
by notFritzArgelander » Mon Aug 10, 2020 8:38 pm

9 Replies

105 Views

Last post by notFritzArgelander
Wed Aug 12, 2020 3:11 pm
APS: sterile neutrinos fading as a possibility

Last post by notFritzArgelander « Tue Aug 11, 2020 9:03 pm
Replies: 2
by notFritzArgelander » Tue Aug 11, 2020 3:28 pm

First post

Of possible cosmological significance and astrophysical importance, experiments in earthly labs have severely limited the properties of the sterile...

Last post

At least two of the three flavors have a nonzero mass. But the problem I assume is that this has yet to be detected....

......
Need more data......

2 Replies

33 Views

Last post by notFritzArgelander
Tue Aug 11, 2020 9:03 pm
Dr H on "Big Physics"

Last post by helicon « Tue Aug 11, 2020 8:57 pm
Replies: 1
by notFritzArgelander » Tue Aug 11, 2020 6:56 pm

1 Replies

24 Views

Last post by helicon
Tue Aug 11, 2020 8:57 pm
AI classifies galaxies

Last post by helicon « Tue Aug 11, 2020 8:23 pm
Replies: 1
by notFritzArgelander » Tue Aug 11, 2020 2:39 pm

1 Replies

24 Views

Last post by helicon
Tue Aug 11, 2020 8:23 pm
the latest test of the universe's homogeneity and isotropy

Last post by notFritzArgelander « Tue Aug 11, 2020 5:20 pm
Replies: 26
by notFritzArgelander » Thu Aug 06, 2020 12:40 am
1

2
First post

In fact it's smoother than expected.

Bad news for fans of the pseudoscience notion that the universe is emitted as a jet from an unobservable black...

Last post

It is easy to use other folks software to post flashy images. But this post is essentially meaningless in the context of this discussion. It is...
26 Replies

231 Views

Last post by notFritzArgelander
Tue Aug 11, 2020 5:20 pm
radio relics of shock waves in a galaxy cluster

Last post by notFritzArgelander « Tue Aug 11, 2020 2:42 pm

by notFritzArgelander » Tue Aug 11, 2020 2:42 pm

0 Replies

16 Views

Last post by notFritzArgelander
Tue Aug 11, 2020 2:42 pm
GC Palomar 3 may be of extra galactic origin

Last post by notFritzArgelander « Tue Aug 11, 2020 2:33 pm
Replies: 2
by notFritzArgelander » Mon Aug 10, 2020 8:22 pm

First post

Its orbit comes to 1100 light years of MW center.

Last post

Thanks for the added link! Looks like they've modded the Samuel Oschin Schmidt Telescope from its original very sleek appearance.

2 Replies

20 Views

Last post by notFritzArgelander
Tue Aug 11, 2020 2:33 pm
HST images NGC 4907

Last post by helicon « Tue Aug 11, 2020 2:05 pm
Replies: 1
by notFritzArgelander » Mon Aug 10, 2020 8:11 pm

First post

At 14th magnitude it needs aperture.

Last post

Probably a 16 inch scope in decent LP conditions would be required, though I suppose it might be visible in a 12 scope from a dark sky location. I...

1 Replies

11 Views

Last post by helicon
Tue Aug 11, 2020 2:05 pm
exotic phases of ice and models of ice giants

Last post by helicon « Tue Aug 11, 2020 1:55 pm
Replies: 1
by notFritzArgelander » Mon Aug 10, 2020 8:28 pm

1 Replies

14 Views

Last post by helicon
Tue Aug 11, 2020 1:55 pm
AAS: TESS finds a slow planet

Last post by Lady Fraktor « Tue Aug 11, 2020 3:34 am
Replies: 1
by notFritzArgelander » Tue Aug 11, 2020 2:57 am

1 Replies

21 Views

Last post by Lady Fraktor
Tue Aug 11, 2020 3:34 am
NASA rocket shows helium structures in solar atmosphere

Last post by notFritzArgelander « Mon Aug 10, 2020 12:26 am
Replies: 2
by notFritzArgelander » Sat Aug 08, 2020 12:39 am

2 Replies

42 Views

Last post by notFritzArgelander
Mon Aug 10, 2020 12:26 am
AAS: dwarf active galaxy nuclei!

Last post by helicon « Sun Aug 09, 2020 8:25 pm
Replies: 1
by notFritzArgelander » Thu Aug 06, 2020 5:39 pm

1 Replies

35 Views

Last post by helicon
Sun Aug 09, 2020 8:25 pm
ALMA census of protostars in Taurus show stages of formation

Last post by helicon « Sun Aug 09, 2020 8:25 pm
Replies: 1
by notFritzArgelander » Sat Aug 08, 2020 12:37 am

1 Replies

26 Views

Last post by helicon
Sun Aug 09, 2020 8:25 pm
AAS: tracing gas flows out of star forming galaxies

Last post by helicon « Sun Aug 09, 2020 8:20 pm
Replies: 1
by notFritzArgelander » Sat Aug 08, 2020 12:51 am

1 Replies

32 Views

Last post by helicon
Sun Aug 09, 2020 8:20 pm
SWaB: will the CMB disappear?

Last post by helicon « Sun Aug 09, 2020 8:18 pm
Replies: 3
by notFritzArgelander » Sat Aug 08, 2020 12:51 am

First post

Well, no. It just attenuates. Here's why...

Last post

Liked the article notFritz.

3 Replies

62 Views

Last post by helicon
Sun Aug 09, 2020 8:18 pm
BH information.ý⅞

Last post by Michael131313 « Sat Aug 08, 2020 3:02 am
Replies: 6
by Michael131313 » Wed Aug 05, 2020 10:23 pm

First post

What is the information that dose or dose not pass through the event horizon consist of. In what form would it be kept in the event horizon....

Last post

Good for you stiring up the pot. Again I thank you and I have bookedmarked this post because it is important to me.

6 Replies

88 Views

Last post by Michael131313
Sat Aug 08, 2020 3:02 am
pulsating variable stars distribute carbon

Last post by notFritzArgelander « Fri Aug 07, 2020 11:20 pm
Replies: 2
by notFritzArgelander » Thu Aug 06, 2020 4:26 pm

2 Replies

29 Views

Last post by notFritzArgelander
Fri Aug 07, 2020 11:20 pm

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