Star Cluster R136 Breaks Out

2021-01-14 晴天鍾天文氣象

Star Cluster R136 Breaks Out

Image Credit: NASA ESA F. Paresce INAF-IASF R. O'Connell U. Virginia

Explanation: In the center of nearby star-forming region lies a huge cluster containing some of the largest, hottest, and most massive stars known. These stars, known collectively as star cluster R136, part of the Tarantula Nebula, were captured in the featured image in visible light in 2009 through the Hubble Space Telescope. Gas and dust clouds in the Tarantula Nebula, have been sculpted into elongated shapes by powerful winds and ultraviolet radiation from these hot cluster stars. The Tarantula Nebula lies within a neighboring galaxy known as the Large Magellanic Cloud and is located a mere 170,000 light-years away.

相關焦點

  • 英文短篇小說欣賞-The Star
    You tell your parents they're idiots, and that this will all blow over in a few days, as soon as they replace that pussy of a president.   Your mother says that the world is ending.
  • NGC 2244: A Star Cluster in the Rosette Nebula
    NGC 2244: A Star Cluster in the Rosette Nebula Image Credit & Copyright: Don Go
  • I Can't Stop Drinking Coffee Out of This Temperature...
    For coffee,science saysit's 136 degrees. (Ember defaults to 135, which I guess is a neater number.)It's for puttering around the house with that first cuppa, or for keeping your java steamy while you duck in and out of meetings all day at the office.
  • R語言SQL管理資料庫的方法
    #使用SQL語句操作數據框,需要加載的程序包sqldf,tcltk,使用iris數據集以及演示library(sqldf)library(tcltk)head(iris)#了解數據集由5各變量組成#取出前幾行a1r <- head(iris,10)#一般方法
  • GO analysis using clusterProfiler
    clusterProfiler supports over-representation test and gene set enrichment analysis of Gene Ontology. It supports GO annotation from OrgDb object, GMT file and user's own data.
  • R語言:用R計算各種統計值
    頻數分布duration = faithful$eruptionsbreaks = seq(1.5, 5.2, length.out = 12)duration.cut = cut(duration, breaks, right=FALSE)right屬性默認為TRUE,表示每個組段為右閉左開的一個區間duration.cut為一個factor
  • redis cluster-cluster 命令手動管理redis集群
    使用cluster命令管理redis cluster集群1、列印集群的信息 CLUSTER INFO cluster_state:okcluster_slots_assigned:16384cluster_slots_ok:16384cluster_slots_pfail
  • 使用ClusterLabs實現Asterisk/FreeSWITCH集群部署
    具體支持功能包括(官方原文):The ClusterLabs stack, incorporating Corosync and Pacemaker defines an Open Source, High Availability cluster offering suitable for both small and large
  • 【聽力】The Life Cycle of a Neutron Star
    The Life Cycle of a Neutron StarDavid LunneyAbout once every century, a massive star somewhere in our galaxy runs out of fuel.
  • R繪圖之ggplot2-散點圖(一)
    當我們對顏色進行設置時,發現colour=sex,fill=sex得到的結果是相同的,但其實他們分別控制著邊框線和實心區域的顏色,我們來看一下,當設置fill為NA時,只是填充部分為空,而邊框仍是黑色hw <- heightweighthw$weightGroup <- cut(hw$weightLb,breaks
  • 【R】ggcor相關性可視化
    pvalue'p$temp = paste(p$cat, p$variable, sep = '_')# 拼接相關性及p值並構造兩個值的分組範圍cor.data = merge(c, p, by = 'temp') %>%        select(c(3,2,4,7))%>%         mutate(rd = cut(cor, breaks
  • 數據可視化之R語言
    gt; panel.hist <- function(x, ...) { + usr<- par("usr"); on.exit(par(usr)) + par(usr = c(usr[1:2], 0, 1.5) ) + h <- hist(x, plot = FALSE) + breaks
  • redis cluster 之master 選舉過程
    在redis 3.0版本後,官方推出了redis cluster 分布式解決方案,當一個redis節點掛了可以快速地切換到另一個節點。當遇到單機內存、並發等瓶頸時,可以採用分布式方案要解決問題.redis-cluster架構中,被設計成共有16384(2的14次方)個hash slot。每個master分得一部分slot,其算法為:hash_slot = crc16(key) mod 16384 ,這就找到對應slot。群集至少需要3主3從,且每個實例使用不同的配置文件。
  • redis cluster 集群管理工具
    前言在redis源碼編譯的時候,在src目錄下會有一個redis-trib.rb的腳本,這個腳本是ruby寫的,用於管理redis cluster。info命令也是先執行load_cluster_info_from_node獲取完整的集群信息。/opt/redis/bin/redis-trib.rb info 127.0.0.1:80013、check檢查集群:檢查集群狀態的命令,沒有其他參數,只需要選擇一個集群中的一個節點即可。